常用的js库封装

Posted 松哥1204

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了常用的js库封装相关的知识,希望对你有一定的参考价值。

/*1.1.4*/
var ecDo = {
    /*字符串*/
    //去除空格  type 1-所有空格  2-前后空格  3-前空格 4-后空格
    //trim(‘  1235asd‘,1)
    //result:1235asd
    trim: function(str, type) {
        switch (type) {
            case 1:
                return str.replace(/\s+/g, "");
            case 2:
                return str.replace(/(^\s*)|(\s*$)/g, "");
            case 3:
                return str.replace(/(^\s*)/g, "");
            case 4:
                return str.replace(/(\s*$)/g, "");
            default:
                return str;
        }
    },
    /*type
     1: 首字母大写
     2:首字母小写
     3:大小写转换
     4:全部大写
     5:全部小写
     * */
    //changeCase(‘asdasd‘,1)
    //result:Asdasd
    changeCase: function(str, type) {
        function ToggleCase(str) {
            var itemText = ""
            str.split("").forEach(
                function(item) {
                    if (/^([a-z]+)/.test(item)) {
                        itemText += item.toUpperCase();
                    } else if (/^([A-Z]+)/.test(item)) {
                        itemText += item.toLowerCase();
                    } else {
                        itemText += item;
                    }
                });
            return itemText;
        }
        switch (type) {
            case 1:
                return str.replace(/\b\w+\b/g, function(word) {
                    return word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase();

                });
            case 2:
                return str.replace(/\b\w+\b/g, function(word) {
                    return word.substring(0, 1).toLowerCase() + word.substring(1).toUpperCase();
                });
            case 3:
                return ToggleCase(str);
            case 4:
                return str.toUpperCase();
            case 5:
                return str.toLowerCase();
            default:
                return str;
        }
    },
    //字符串循环复制
    //repeatStr(str->字符串, count->次数)
    //repeatStr(‘123‘,3)
    //"result:123123123"
    repeatStr: function(str, count) {
        var text = ‘‘;
        for (var i = 0; i < count; i++) {
            text += str;
        }
        return text;
    },
    //字符串替换(字符串,要替换的字符或者正则表达式(不要写g),替换成什么)
    //ecDo.replaceAll(‘这里是上海,中国第三大城市,广东省省会,简称穗,‘,‘上海‘,‘广州‘)
    //result:"这里是广州,中国第三大城市,广东省省会,简称穗,"
    replaceAll: function(str, AFindText, ARepText) {
        raRegExp = new RegExp(AFindText, "g");
        return str.replace(raRegExp, ARepText);
    },
    //字符替换*
    //replaceStr(字符串,字符格式, 替换方式,替换的字符(默认*))
    //type: 0.依次从前面开始替换的个数  1.从最后一个开始替换的个数
    //replaceStr(‘1asd88465asdwqe3‘,[5],1,‘+‘)        replaceStr(‘1asd88465asdwqe3‘,[5],0,‘+‘)  
    //result:"1asd88465as+++++"                      result:"+++++8465asdwqe3"
    replaceStr: function(str, regArr, type, ARepText) {
        var regtext = ‘‘,
            Reg = null,
            replaceText = ARepText || ‘*‘;
        //replaceStr(‘18819322663‘,[3,5,3],0)
        //result:188*****663
        //repeatStr是在上面定义过的(字符串循环复制),大家注意哦
        if (regArr.length === 3 && type === 0) {
            regtext = ‘(\\w{‘ + regArr[0] + ‘})\\w{‘ + regArr[1] + ‘}(\\w{‘ + regArr[2] + ‘})‘
            Reg = new RegExp(regtext);
            var replaceCount = this.repeatStr(replaceText, regArr[1]);
            return str.replace(Reg, ‘$1‘ + replaceCount + ‘$2‘)
        }
        //replaceStr(‘asdasdasdaa‘,[3,5,3],1)
        //result:***asdas***
        else if (regArr.length === 3 && type === 1) {
            regtext = ‘\\w{‘ + regArr[0] + ‘}(\\w{‘ + regArr[1] + ‘})\\w{‘ + regArr[2] + ‘}‘
            Reg = new RegExp(regtext);
            var replaceCount1 = this.repeatStr(replaceText, regArr[0]);
            var replaceCount2 = this.repeatStr(replaceText, regArr[2]);
            return str.replace(Reg, replaceCount1 + ‘$1‘ + replaceCount2)
        }
        //replaceStr(‘1asd88465asdwqe3‘,[5],0)
        //result:*****8465asdwqe3
        else if (regArr.length === 1 && type === 0) {
            regtext = ‘(^\\w{‘ + regArr[0] + ‘})‘
            Reg = new RegExp(regtext);
            var replaceCount = this.repeatStr(replaceText, regArr[0]);
            return str.replace(Reg, replaceCount)
        }
        //replaceStr(‘1asd88465asdwqe3‘,[5],1,‘+‘)
        //result:"1asd88465as+++++"
        else if (regArr.length === 1 && type === 1) {
            regtext = ‘(\\w{‘ + regArr[0] + ‘}$)‘
            Reg = new RegExp(regtext);
            var replaceCount = this.repeatStr(replaceText, regArr[0]);
            return str.replace(Reg, replaceCount)
        }
    },
    //检测字符串
    //checkType(‘165226226326‘,‘phone‘)
    //result:false
    //大家可以根据需要扩展
    checkType: function(str, type) {
        switch (type) {
            case ‘email‘:
                return /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.test(str);
            case ‘phone‘:
                return /^1[3|4|5|7|8][0-9]{9}$/.test(str);
            case ‘tel‘:
                return /^(0\d{2,3}-\d{7,8})(-\d{1,4})?$/.test(str);
            case ‘number‘:
                return /^[0-9]$/.test(str);
            case ‘english‘:
                return /^[a-zA-Z]+$/.test(str);
            case ‘text‘:
                return /^\w+$/.test(str);
            case ‘chinese‘:
                return /^[\u4E00-\u9FA5]+$/.test(str);
            case ‘lower‘:
                return /^[a-z]+$/.test(str);
            case ‘upper‘:
                return /^[A-Z]+$/.test(str);
            default:
                return true;
        }
    },
    //检测密码强度
    //checkPwd(‘12asdASAD‘)
    //result:3(强度等级为3)
    checkPwd: function(str) {
        var nowLv = 0;
        if (str.length < 6) {
            return nowLv
        }
        if (/[0-9]/.test(str)) {
            nowLv++
        }
        if (/[a-z]/.test(str)) {
            nowLv++
        }
        if (/[A-Z]/.test(str)) {
            nowLv++
        }
        if (/[\.|-|_]/.test(str)) {
            nowLv++
        }
        return nowLv;
    },
    //随机码
    //count取值范围2-36

    //randomWord(10)
    //result:"2584316588472575"

    //randomWord(14)
    //result:"9b405070dd00122640c192caab84537"

    //randomWord(36)
    //result:"83vhdx10rmjkyb9"

    randomWord: function(count) {
        return Math.random().toString(count).substring(2);
    },

    //查找字符串
    //strSplit: 出现在字符串里的次数
    //var strTest=‘sad44654blog5a1sd67as9dablog4s5d16zxc4sdweasjkblogwqepaskdkblogahseiuadbhjcibloguyeajzxkcabloguyiwezxc967‘
    //countStr(strTest,‘blog‘)
    //result:6
    countStr: function(str, strSplit) {
        return str.split(strSplit).length - 1
    },
    //过滤字符串(html标签,表情,特殊字符)
    //字符串,替换内容(special-特殊字符,html-html标签,emjoy-emjoy表情,word-小写字母,WORD-大写字母,number-数字,chinese-中文),要替换成什么,默认‘‘,保留哪些特殊字符
    //如果需要过滤多种字符,type参数使用,分割,如下栗子
    //过滤字符串的html标签,大写字母,中文,特殊字符,全部替换成*,但是特殊字符‘%‘,‘?‘,除了这两个,其他特殊字符全部清除
    //var str=‘asd    654a大蠢sasdasdASDQWEXZC6d5#%^*^&*^%^&*$\\"\‘#@!()*/-())_\‘":"{}?<div></div><img src=""/>啊实打实大蠢猪自行车这些课程‘;
    // ecDo.filterStr(str,‘html,WORD,chinese,special‘,‘*‘,‘%?‘)
    //result:"asd    654a**sasdasd*********6d5#%^*^&*^%^&*$\"‘#@!()*/-())_‘":"{}?*****************"
    filterStr: function(str, type, restr, spstr) {
        var typeArr = type.split(‘,‘),
            _str = str;
        for (var i = 0, len = typeArr.length; i < len; i++) {
            //是否是过滤特殊符号
            if (typeArr[i] === ‘special‘) {
                var pattern, regText = ‘$()[]{}?\|^*+./\"\‘+‘;
                //是否有哪些特殊符号需要保留
                if (spstr) {
                    var _spstr = spstr.split(""),
                        _regText = "[^0-9A-Za-z\\s";
                    for (var j = 0, len1 = _spstr.length; j < len1; j++) {
                        if (regText.indexOf(_spstr[j]) === -1) {
                            _regText += _spstr[j];
                        } else {
                            _regText += ‘\\‘ + _spstr[j];
                        }
                    }
                    _regText += ‘]‘
                    pattern = new RegExp(_regText, ‘g‘);
                } else {
                    pattern = new RegExp("[^0-9A-Za-z\\s]", ‘g‘)
                }

            }
            var _restr = restr || ‘‘;
            switch (typeArr[i]) {
                case ‘special‘:
                    _str = _str.replace(pattern, _restr);
                    break;
                case ‘html‘:
                    _str = _str.replace(/<\/?[^>]*>/g, _restr);
                    break;
                case ‘emjoy‘:
                    _str = _str.replace(/[^\u4e00-\u9fa5|\u0000-\u00ff|\u3002|\uFF1F|\uFF01|\uff0c|\u3001|\uff1b|\uff1a|\u3008-\u300f|\u2018|\u2019|\u201c|\u201d|\uff08|\uff09|\u2014|\u2026|\u2013|\uff0e]/g, _restr);
                    break;
                case ‘word‘:
                    _str = _str.replace(/[a-z]/g, _restr);
                    break;
                case ‘WORD‘:
                    _str = _str.replace(/[A-Z]/g, _restr);
                    break;
                case ‘number‘:
                    _str = _str.replace(/[0-9]/g, _restr);
                    break;
                case ‘chinese‘:
                    _str = _str.replace(/[\u4E00-\u9FA5]/g, _restr);
                    break;
            }
        }
        return _str;
    },
    //格式化处理字符串
    //ecDo.formatText(‘1234asda567asd890‘)
    //result:"12,34a,sda,567,asd,890"
    //ecDo.formatText(‘1234asda567asd890‘,4,‘ ‘)
    //result:"1 234a sda5 67as d890"
    //ecDo.formatText(‘1234asda567asd890‘,4,‘-‘)
    //result:"1-234a-sda5-67as-d890"
    formatText: function(str, size, delimiter) {
        var _size = size || 3,
            _delimiter = delimiter || ‘,‘;
        var regText = ‘\\B(?=(\\w{‘ + _size + ‘})+(?!\\w))‘;
        var reg = new RegExp(regText, ‘g‘);
        return str.replace(reg, _delimiter);
    },
    //找出最长单词 (Find the Longest word in a String)
    //longestWord(‘Find the Longest word in a String‘)
    //result:7
    //longestWord(‘Find|the|Longest|word|in|a|String‘,‘|‘)
    //result:7
    longestWord: function(str, splitType) {
        var _splitType = splitType || /\s+/g,
            _max = 0;
        var strArr = str.split(_splitType);
        strArr.forEach(function(item) {
            if (_max < item.length) {
                _max = item.length
            }
        })
        return _max;
    },
    //句中单词首字母大写 (Title Case a Sentence)
    //这个我也一直在纠结,英文标题,即使是首字母大写,也未必每一个单词的首字母都是大写的,但是又不知道哪些应该大写,哪些不应该大写
    //ecDo.titleCaseUp(‘this is a title‘)
    //"This Is A Title"
    titleCaseUp: function(str, splitType) {
        var _splitType = splitType || /\s+/g;
        var strArr = str.split(_splitType),
            result = "",
            _this = this
        strArr.forEach(function(item) {
            result += _this.changeCase(item, 1) + ‘ ‘;
        })
        return this.trim(result, 4)
    },

    /*数组*/

    //数组去重
    removeRepeatArray: function(arr) {
        return arr.filter(function(item, index, self) {
            return self.indexOf(item) === index;
        });
        //es6
        //return Array.from(new Set(arr))
    },
    //数组顺序打乱
    upsetArr: function(arr) {
        return arr.sort(function() {
            return Math.random() - 0.5
        });
    },

    //数组最大值
    //这一块的封装,主要是针对数字类型的数组
    //例如:maxArr([10,20,15])
    //输出结果:20
    maxArr: function(arr) {
        return Math.max.apply(null, arr);
    },
    //数组最小值
    minArr: function(arr) {
        return Math.min.apply(null, arr);
    },

    //这一块的封装,主要是针对数字类型的数组
    //数组求和
    sumArr: function(arr) {
        return arr.reduce(function(pre, cur) {
            return pre + cur
        })
    },

    //数组平均值,小数点可能会有很多位,这里不做处理,处理了使用就不灵活了!
    covArr: function(arr) {
        return this.sumArr(arr) / arr.length;
    },
    //从数组中随机获取元素
    randomOne: function(arr) {
        return arr[Math.floor(Math.random() * arr.length)];
    },

    //回数组(字符串)一个元素出现的次数
    //getEleCount(‘asd56+asdasdwqe‘,‘a‘)
    //result:3
    //getEleCount([1,2,3,4,5,66,77,22,55,22],22)
    //result:2
    getEleCount: function(obj, ele) {
        var num = 0;
        for (var i = 0, len = obj.length; i < len; i++) {
            if (ele === obj[i]) {
                num++;
            }
        }
        return num;
    },

    //得到n1-n2下标的数组
    //getArrayNum([0,1,2,3,4,5,6,7,8,9],5,9)
    //result:[5, 6, 7, 8, 9]
    //getArrayNum([0,1,2,3,4,5,6,7,8,9],2) 不传第二个参数,默认返回从n1到数组结束的元素
    //result:[2, 3, 4, 5, 6, 7, 8, 9]
    getArrayNum: function(arr, n1, n2) {
        var arr1 = arr.slice(n1, n2);
        return arr1;
    },

    //筛选数组
    //删除值为‘val‘的数组元素
    //removeArrayForValue([‘test‘,‘test1‘,‘test2‘,‘test‘,‘aaa‘],‘test‘,‘%‘)
    //result:["aaa"]   带有‘test‘的都删除
    //removeArrayForValue([‘test‘,‘test1‘,‘test2‘,‘test‘,‘aaa‘],‘test‘)
    //result:["test1", "test2", "aaa"]  //数组元素的值全等于‘test‘才被删除
    removeArrayForValue: function(arr, val, type) {
        return arr.filter(function(item) {
            return type ? item.indexOf(val) === -1 : item !== val
        })
    },
    //获取对象数组某些项
    //var arr=[{a:1,b:2,c:9},{a:2,b:3,c:5},{a:5,b:9},{a:4,b:2,c:5},{a:4,b:5,c:7}]
    //getOptionArray(arr,‘a,c‘)
    //result:[{a:1,c:9},{a:2,c:5},{a:5,c:underfind},{a:4,c:5},{a:4,c:7}]
    //getOptionArray(arr,‘b‘,1)
    //result:[2, 3, 9, 2, 5]
    getOptionArray: function(arr, keys, type) {
        var newArr = []
        if (!keys) {
            return arr
        }
        //是否只是需要获取某一项的值
        if (type === 1) {
            for (var i = 0, len = arr.length; i < len; i++) {
                newArr.push(arr[i][keys])
            }
            return newArr;
        }
        var _keys = keys.split(‘,‘),
            newArrOne = {};
        for (var i = 0, len = arr.length; i < len; i++) {
            newArrOne = {};
            for (var j = 0, len1 = _keys.length; j < len1; j++) {
                newArrOne[_keys[j]] = arr[i][_keys[j]]
            }
            newArr.push(newArrOne);
        }
        return newArr
    },
    //排除数组某些项
    //var arr=[{a:1,b:2,c:9},{a:2,b:3,c:5},{a:5,b:9},{a:4,b:2,c:5},{a:4,b:5,c:7}]
    //filterOptionArray(arr,‘a‘)
    //result:[{b:2,c:9},{b:3,c:5},{b:9},{b:2,c:5},{b:5,c:7}]
    //filterOptionArray(arr,‘a,c‘)
    //result:[{b:2},{b:3},{b:9},{b:2},{b:5}]
    filterOptionArray: function(arr, keys) {
        var newArr = []
        var _keys = keys.split(‘,‘),
            newArrOne = {};
        for (var i = 0, len = arr.length; i < len; i++) {
            newArrOne = {};
            for (var key in arr[i]) {
                //如果key不存在排除keys里面,添加数据
                if (_keys.indexOf(key) === -1) {
                    newArrOne[key] = arr[i][key];
                }
            }
            newArr.push(newArrOne);
        }
        return newArr
    },
    //对象数组的排序
    //var arr=[{a:1,b:2,c:9},{a:2,b:3,c:5},{a:5,b:9},{a:4,b:2,c:5},{a:4,b:5,c:7}]
    //ecDo.arraySort(arr,‘a,b‘)a是第一排序条件,b是第二排序条件
    //result:[{"a":1,"b":2,"c":9},{"a":2,"b":3,"c":5},{"a":4,"b":2,"c":5},{"a":4,"b":5,"c":7},{"a":5,"b":9}]
    arraySort: function(arr, sortText) {
        if (!sortText) {
            return arr
        }
        var _sortText = sortText.split(‘,‘).reverse(),
            _arr = arr.slice(0);
        for (var i = 0, len = _sortText.length; i < len; i++) {
            _arr.sort(function(n1, n2) {
                return n1[_sortText[i]] - n2[_sortText[i]]
            })
        }
        return _arr;
    },
    //数组扁平化
    steamroller: function(arr) {
        var newArr = [],
            _this = this;
        for (var i = 0; i < arr.length; i++) {
            if (Array.isArray(arr[i])) {
                // 如果是数组,调用(递归)steamroller 将其扁平化
                // 然后再 push 到 newArr 中
                newArr.push.apply(newArr, _this.steamroller(arr[i]));
            } else {
                // 不是数组直接 push 到 newArr 中
                newArr.push(arr[i]);
            }
        }
        return newArr;
    },
    //另一种写法
    //steamroller([1,2,[4,5,[1,23]]])
    //[1, 2, 4, 5, 1, 23]
    /*
     * i=0 newArr.push(arr[i])  [1]
     * i=1 newArr.push(arr[i])  [1,2]
     * i=2 newArr = newArr.concat(steamroller(arr[i]));  执行到下面
     * 第一次i=2进入后 i=0, newArr.push(arr[i]);  [4]
     * 第一次i=2进入后 i=1, newArr.push(arr[i]);  [4,5]
     *  * i=2 newArr = newArr.concat(steamroller(arr[i]));  执行到下面
     * 第二次i=2进入后 i=0, newArr.push(arr[i]);  [1]
     * 第二次i=2进入后 i=1, newArr.push(arr[i]);  [1,23]  执行到下面
     * 第二次循环完,回到第一次进入后  newArr = newArr.concat(steamroller(arr[i]));  [4,5].concat([1,23])   [4,5,1,23]
     * 然后回到第一次   [1,2].concat([4,5,1,23])
     */
    //  steamroller: function (arr) {
    //      var newArr = [];
    //      for (var i = 0; i < arr.length; i++) {
    //          if (Array.isArray(arr[i])) {
    //              // 如果是数组,调用(递归)steamroller 将其扁平化
    //              // 然后再 push 到 newArr 中
    //              newArr = newArr.concat(steamroller(arr[i]));
    //          } else {
    //              // 不是数组直接 push 到 newArr 中
    //              newArr.push(arr[i]);
    //          }
    //      }
    //      return newArr;
    //  },

    /*对象及其他*/

    //适配rem
    getFontSize: function() {
        var doc = document,
            win = window;
        var docEl = doc.documentElement,
            resizeEvt = ‘orientationchange‘ in window ? ‘orientationchange‘ : ‘resize‘,
            recalc = function() {
                var clientWidth = docEl.clientWidth;
                if (!clientWidth) return;
                //如果屏幕大于750(750是根据我效果图设置的,具体数值参考效果图),就设置clientWidth=750,防止font-size会超过100px
                if (clientWidth > 750) {
                    clientWidth = 750
                }
                //设置根元素font-size大小
                docEl.style.fontSize = 100 * (clientWidth / 750) + ‘px‘;
            };
        //屏幕大小改变,或者横竖屏切换时,触发函数
        win.addEventListener(resizeEvt, recalc, false);
        //文档加载完成时,触发函数
        doc.addEventListener(‘DOMContentLoaded‘, recalc, false);
    },
    //到某一个时间的倒计时
    //getEndTime(‘2017/7/22 16:0:0‘)
    //result:"剩余时间6天 2小时 28 分钟20 秒"
    getEndTime: function(endTime) {
        var startDate = new Date(); //开始时间,当前时间
        var endDate = new Date(endTime); //结束时间,需传入时间参数
        var t = endDate.getTime() - startDate.getTime(); //时间差的毫秒数
        var d = 0,
            h = 0,
            m = 0,
            s = 0;
        if (t >= 0) {
            d = Math.floor(t / 1000 / 3600 / 24);
            h = Math.floor(t / 1000 / 60 / 60 % 24);
            m = Math.floor(t / 1000 / 60 % 60);
            s = Math.floor(t / 1000 % 60);
            return "剩余时间" + d + "天 " + h + "小时 " + m + " 分钟" + s + " 秒";

        } else {
            return ‘时间错误!!!‘;
        }
    },
    //随进产生颜色
    randomColor: function() {
        //randomNumber是下面定义的函数
        //写法1
        //return ‘rgb(‘ + this.randomNumber(255) + ‘,‘ + this.randomNumber(255) + ‘,‘ + this.randomNumber(255) + ‘)‘;

        //写法2
        return ‘#‘ + Math.random().toString(16).substring(2).substr(0, 6);

        //写法3
        //var color=‘#‘,_index=this.randomNumber(15);
        //for(var i=0;i<6;i++){
        //color+=‘0123456789abcdef‘[_index];
        //}
        //return color;
    },
    //随机返回一个范围的数字
    randomNumber: function(n1, n2) {
        //randomNumber(5,10)
        //返回5-10的随机整数,包括5,10
        if (arguments.length === 2) {
            return Math.round(n1 + Math.random() * (n2 - n1));
        }
        //randomNumber(10)
        //返回0-10的随机整数,包括0,10
        else if (arguments.length === 1) {
            return Math.round(Math.random() * n1)
        }
        //randomNumber()
        //返回0-255的随机整数,包括0,255
        else {
            return Math.round(Math.random() * 255)
        }
    },
    //设置url参数
    //setUrlPrmt({‘a‘:1,‘b‘:2})
    //result:a=1&b=2
    setUrlPrmt: function(obj) {
        var _rs = [];
        for (var p in obj) {
            if (obj[p] != null && obj[p] != ‘‘) {
                _rs.push(p + ‘=‘ + obj[p])
            }
        }
        return _rs.join(‘&‘);
    },
    //获取url参数
    //getUrlPrmt(‘segmentfault.com/write?draftId=122000011938‘)
    //result:Object{draftId: "122000011938"}
    getUrlPrmt: function(url) {
        url = url ? url : window.location.href;
        var _pa = url.substring(url.indexOf(‘?‘) + 1),
            _arrS = _pa.split(‘&‘),
            _rs = {};
        for (var i = 0, _len = _arrS.length; i < _len; i++) {
            var pos = _arrS[i].indexOf(‘=‘);
            if (pos == -1) {
                continue;
            }
            var name = _arrS[i].substring(0, pos),
                value = window.decodeURIComponent(_arrS[i].substring(pos + 1));
            _rs[name] = value;
        }
        return _rs;
    },

    //现金额大写转换函数
    //upDigit(168752632)
    //result:"人民币壹亿陆仟捌佰柒拾伍万贰仟陆佰叁拾贰元整"
    //upDigit(1682)
    //result:"人民币壹仟陆佰捌拾贰元整"
    //upDigit(-1693)
    //result:"欠人民币壹仟陆佰玖拾叁元整"
    upDigit: function(n) {
        var fraction = [‘角‘, ‘分‘, ‘厘‘];
        var digit = [‘零‘, ‘壹‘, ‘贰‘, ‘叁‘, ‘肆‘, ‘伍‘, ‘陆‘, ‘柒‘, ‘捌‘, ‘玖‘];
        var unit = [
            [‘元‘, ‘万‘, ‘亿‘],
            [‘‘, ‘拾‘, ‘佰‘, ‘仟‘]
        ];
        var head = n < 0 ? ‘欠人民币‘ : ‘人民币‘;
        n = Math.abs(n);
        var s = ‘‘;
        for (var i = 0; i < fraction.length; i++) {
            s += (digit[Math.floor(n * 10 * Math.pow(10, i)) % 10] + fraction[i]).replace(/零./, ‘‘);
        }
        s = s || ‘整‘;
        n = Math.floor(n);
        for (var i = 0; i < unit[0].length && n > 0; i++) {
            var p = ‘‘;
            for (var j = 0; j < unit[1].length && n > 0; j++) {
                p = digit[n % 10] + unit[1][j] + p;
                n = Math.floor(n / 10);
            }
            s = p.replace(/(零.)*零$/, ‘‘).replace(/^$/, ‘零‘) + unit[0][i] + s;
            //s = p + unit[0][i] + s;
        }
        return head + s.replace(/(零.)*零元/, ‘元‘).replace(/(零.)+/g, ‘零‘).replace(/^整$/, ‘零元整‘);
    },
    //清除对象中值为空的属性
    //filterParams({a:"",b:null,c:"010",d:123})
    //Object {c: "010", d: 123}
    filterParams: function(obj) {
        var _newPar = {};
        for (var key in obj) {
            if ((obj[key] === 0 || obj[key]) && obj[key].toString().replace(/(^\s*)|(\s*$)/g, ‘‘) !== ‘‘) {
                _newPar[key] = obj[key];
            }
        }
        return _newPar;
    },
    //cookie
    //设置cookie
    setCookie: function(name, value, iDay) {
        var oDate = new Date();
        oDate.setDate(oDate.getDate() + iDay);
        document.cookie = name + ‘=‘ + value + ‘;expires=‘ + oDate;
    },
    //获取cookie
    getCookie: function(name) {
        var arr = document.cookie.split(‘; ‘);
        for (var i = 0; i < arr.length; i++) {
            var arr2 = arr[i].split(‘=‘);
            if (arr2[0] == name) {
                return arr2[1];
            }
        }
        return ‘‘;
    },
    //删除cookie
    removeCookie: function(name) {
        this.setCookie(name, 1, -1);
    },

    /*DOM*/

    //检测对象是否有哪个类名
    hasClass: function(obj, classStr) {
        if (obj.className && this.trim(obj.className, 1) !== "") {
            var arr = obj.className.split(/\s+/); //这个正则表达式是因为class可以有多个,判断是否包含
            return (arr.indexOf(classStr) == -1) ? false : true;
        } else {
            return false;
        }

    },
    //添加类名
    addClass: function(obj, classStr) {
        if ((this.istype(obj, ‘array‘) || this.istype(obj, ‘elements‘)) && obj.length >= 1) {
            for (var i = 0, len = obj.length; i < len; i++) {
                if (!this.hasClass(obj[i], classStr)) {
                    obj[i].className += " " + classStr;
                }
            }
        } else {
            if (!this.hasClass(obj, classStr)) {
                obj.className += " " + classStr;
            }
        }
    },
    //删除类名
    removeClass: function(obj, classStr) {
        if ((this.istype(obj, ‘array‘) || this.istype(obj, ‘elements‘)) && obj.length > 1) {
            for (var i = 0, len = obj.length; i < len; i++) {
                if (this.hasClass(obj[i], classStr)) {
                    var reg = new RegExp(‘(\\s|^)‘ + classStr + ‘(\\s|$)‘);
                    obj[i].className = obj[i].className.replace(reg, ‘‘);
                }
            }
        } else {
            if (this.hasClass(obj, classStr)) {
                var reg = new RegExp(‘(\\s|^)‘ + classStr + ‘(\\s|$)‘);
                obj.className = obj.className.replace(reg, ‘‘);
            }
        }
    },
    //替换类名("被替换的类名","替换的类名")
    replaceClass: function(obj, newName, oldName) {
        this.removeClass(obj, oldName);
        this.addClass(obj, newName);
    },
    //获取兄弟节点
    //ecDo.siblings(obj,‘#id‘)
    siblings: function(obj, opt) {
        var a = []; //定义一个数组,用来存o的兄弟元素
        var p = obj.previousSibling;
        while (p) { //先取o的哥哥们 判断有没有上一个哥哥元素,如果有则往下执行 p表示previousSibling
            if (p.nodeType === 1) {
                a.push(p);
            }
            p = p.previousSibling //最后把上一个节点赋给p
        }
        a.reverse() //把顺序反转一下 这样元素的顺序就是按先后的了
        var n = obj.nextSibling; //再取o的弟弟
        while (n) { //判断有没有下一个弟弟结点 n是nextSibling的意思
            if (n.nodeType === 1) {
                a.push(n);
            }
            n = n.nextSibling;
        }
        if (opt) {
            var _opt = opt.substr(1);
            var b = []; //定义一个数组,用于储存过滤a的数组
            if (opt[0] === ‘.‘) {
                b = a.filter(function(item) {
                    return item.className === _opt
                });
            } else if (opt[0] === ‘#‘) {
                b = a.filter(function(item) {
                    return item.id === _opt
                });
            } else {
                b = a.filter(function(item) {
                    return item.tagName.toLowerCase() === opt
                });
            }
            return b;
        }
        return a;
    },
    //设置样式
    css: function(obj, json) {
        for (var attr in json) {
            obj.style[attr] = json[attr];
        }
    },
    //设置HTML内容
    html: function(obj) {
        if (arguments.length === 1) {
            return obj.innerHTML;
        } else if (arguments.length === 2) {
            obj.innerHTML = arguments[1];
        }
    },
    //设置HTML内容
    text: function(obj) {
        if (arguments.length === 1) {
            return obj.innerHTML;
        } else if (arguments.length === 2) {
            obj.innerHTML = this.filterStr(arguments[1], ‘html‘);
        }
    },
    //显示隐藏
    show: function(obj) {
        var blockArr = [‘div‘, ‘li‘, ‘ul‘, ‘ol‘, ‘dl‘, ‘table‘, ‘article‘, ‘h1‘, ‘h2‘, ‘h3‘, ‘h4‘, ‘h5‘, ‘h6‘, ‘p‘, ‘hr‘, ‘header‘, ‘footer‘, ‘details‘, ‘summary‘, ‘section‘, ‘aside‘, ‘‘]
        if (blockArr.indexOf(obj.tagName.toLocaleLowerCase()) === -1) {
            obj.style.display = ‘inline‘;
        } else {
            obj.style.display = ‘block‘;
        }
    },
    hide: function(obj) {
        obj.style.display = "none";
    },
    /* 封装ajax函数
     * @param {string}obj.type http连接的方式,包括POST和GET两种方式
     * @param {string}obj.url 发送请求的url
     * @param {boolean}obj.async 是否为异步请求,true为异步的,false为同步的
     * @param {object}obj.data 发送的参数,格式为对象类型
     * @param {function}obj.success ajax发送并接收成功调用的回调函数
     * @param {function}obj.error ajax发送失败或者接收失败调用的回调函数
     */
    //  ajax({
    //      type:‘get‘,
    //      url:‘xxx‘,
    //      data:{
    //          id:‘111‘
    //      },
    //      success:function(res){
    //          console.log(res)
    //      }
    //  })
    ajax: function(obj) {
        obj = obj || {};
        obj.type = obj.type.toUpperCase() || ‘POST‘;
        obj.url = obj.url || ‘‘;
        obj.async = obj.async || true;
        obj.data = obj.data || null;
        obj.success = obj.success || function() {};
        obj.error = obj.error || function() {};
        var xmlHttp = null;
        if (XMLHttpRequest) {
            xmlHttp = new XMLHttpRequest();
        } else {
            xmlHttp = new ActiveXObject(‘Microsoft.XMLHTTP‘);
        }
        var params = [];
        for (var key in obj.data) {
            params.push(key + ‘=‘ + obj.data[key]);
        }
        var postData = params.join(‘&‘);
        if (obj.type.toUpperCase() === ‘POST‘) {
            xmlHttp.open(obj.type, obj.url, obj.async);
            xmlHttp.setRequestHeader(‘Content-Type‘, ‘application/x-www-form-urlencoded;charset=utf-8‘);
            xmlHttp.send(postData);
        } else if (obj.type.toUpperCase() === ‘GET‘) {
            xmlHttp.open(obj.type, obj.url + ‘?‘ + postData, obj.async);
            xmlHttp.send(null);
        }
        xmlHttp.onreadystatechange = function() {
            if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {
                obj.success(xmlHttp.responseText);
            } else {
                obj.error(xmlHttp.responseText);
            }
        };
    },
    //图片没加载出来时用一张图片代替
    aftLoadImg: function(obj, url, errorUrl, cb) {
        var oImg = new Image(),
            _this = this;
        oImg.src = url;
        oImg.onload = function() {
            obj.src = oImg.src;
            if (cb && _this.istype(cb, ‘function‘)) {
                cb(obj);
            }
        }
        oImg.onerror = function() {
            obj.src = errorUrl;
            if (cb && _this.istype(cb, ‘function‘)) {
                cb(obj);
            }
        }
    },
    //图片滚动懒加载
    //@className {string} 要遍历图片的类名
    //@num {number} 距离多少的时候开始加载 默认 0
    //比如,一张图片距离文档顶部3000,num参数设置200,那么在页面滚动到2800的时候,图片加载。不传num参数就滚动,num默认是0,页面滚动到3000就加载
    //html代码
    //<p><img data-src="lawyerOtherImg.jpg" class="load-img" width=‘528‘ height=‘304‘ /></p>
    //<p><img data-src="lawyerOtherImg.jpg" class="load-img" width=‘528‘ height=‘304‘ /></p>
    //<p><img data-src="lawyerOtherImg.jpg" class="load-img" width=‘528‘ height=‘304‘ /></p>....
    //data-src储存src的数据,到需要加载的时候把data-src的值赋值给src属性,图片就会加载。
    //详细可以查看testLoadImg.html

    //window.onload = function() {
    //  loadImg(‘load-img‘,100);
    //  window.onscroll = function() {
    //      loadImg(‘load-img‘,100);
    //      }
    //}
    loadImg: function(className, num, errorUrl) {
        var _className = className || ‘ec-load-img‘,
            _num = num || 0,
            _this = this,
            _errorUrl = errorUrl || null;
        var oImgLoad = document.getElementsByClassName(_className);
        for (var i = 0, len = oImgLoad.length; i < len; i++) {
            if (document.documentElement.clientHeight + document.documentElement.scrollTop > oImgLoad[i].offsetTop - _num && !oImgLoad[i].isLoad) {
                //记录图片是否已经加载
                oImgLoad[i].isLoad = true;
                //设置过渡,当图片下来的时候有一个图片透明度变化
                oImgLoad[i].style.cssText = "transition: ‘‘; opacity: 0;"
                if (oImgLoad[i].dataset) {
                    this.aftLoadImg(oImgLoad[i], oImgLoad[i].dataset.src, _errorUrl, function(o) {
                        setTimeout(function() {
                            if (o.isLoad) {
                                _this.removeClass(o, _className);
                                o.style.cssText = "";
                            }
                        }, 1000)
                    });
                } else {
                    this.aftLoadImg(oImgLoad[i], oImgLoad[i].getAttribute("data-src"), _errorUrl, function(o) {
                        setTimeout(function() {
                            if (o.isLoad) {
                                _this.removeClass(o, _className);
                                o.style.cssText = "";
                            }
                        }, 1000)
                    });
                }
                (function(i) {
                    setTimeout(function() {
                        oImgLoad[i].style.cssText = "transition:all 1s; opacity: 1;";
                    }, 16)
                })(i);
            }
        }
    },
    //创建正则字符
    createKeyExp: function(strArr) {
        var str = "";
        for (var i = 0; i < strArr.length; i++) {
            if (i != strArr.length - 1) {
                str = str + strArr[i] + "|";
            } else {
                str = str + strArr[i];
            }
        }
        return "(" + str + ")";
    },
    //关键字加标签(多个关键词用空格隔开)
    //ecDo.findKey(‘守侯我oaks接到了来自下次你离开快乐吉祥留在开城侯‘,‘守侯 开‘,‘i‘)
    //"<i>守侯</i>我oaks接到了来自下次你离<i>开</i>快乐吉祥留在<i>开</i>城侯"
    findKey: function(str, key, el) {
        var arr = null,
            regStr = null,
            content = null,
            Reg = null,
            _el = el || ‘span‘;
        arr = key.split(/\s+/);
        //alert(regStr); //    如:(前端|过来)
        regStr = this.createKeyExp(arr);
        content = str;
        //alert(Reg);//        /如:(前端|过来)/g
        Reg = new RegExp(regStr, "g");
        //过滤html标签 替换标签,往关键字前后加上标签
        content = content.replace(/<\/?[^>]*>/g, ‘‘)
        return content.replace(Reg, "<" + _el + ">$1</" + _el + ">");
    },
    //数据类型判断
    //ecDo.istype([],‘array‘)
    //true
    //ecDo.istype([])
    //‘[object Array]‘
    istype: function(o, type) {
        if (type) {
            var _type = type.toLowerCase();
        }
        switch (_type) {
            case ‘string‘:
                return Object.prototype.toString.call(o) === ‘[object String]‘;
            case ‘number‘:
                return Object.prototype.toString.call(o) === ‘[object Number]‘;
            case ‘boolean‘:
                return Object.prototype.toString.call(o) === ‘[object Boolean]‘;
            case ‘undefined‘:
                return Object.prototype.toString.call(o) === ‘[object Undefined]‘;
            case ‘null‘:
                return Object.prototype.toString.call(o) === ‘[object Null]‘;
            case ‘function‘:
                return Object.prototype.toString.call(o) === ‘[object Function]‘;
            case ‘array‘:
                return Object.prototype.toString.call(o) === ‘[object Array]‘;
            case ‘object‘:
                return Object.prototype.toString.call(o) === ‘[object Object]‘;
            case ‘nan‘:
                return isNaN(o);
            case ‘elements‘:
                return Object.prototype.toString.call(o).indexOf(‘HTML‘) !== -1
            default:
                return Object.prototype.toString.call(o)
        }
    },

    //手机类型判断
    browserInfo: function(type) {
        switch (type) {
            caseandroid:
                return navigator.userAgent.toLowerCase().indexOf(‘android‘) !== -1
            case ‘iphone‘:
                return navigator.userAgent.toLowerCase().indexOf(‘iphone‘) !== -1
            case ‘ipad‘:
                return navigator.userAgent.toLowerCase().indexOf(‘ipad‘) !== -1
            case ‘weixin‘:
                return navigator.userAgent.toLowerCase().indexOf(‘micromessenger‘) !== -1
            default:
                return navigator.userAgent.toLowerCase()
        }
    },
    //函数节流
    // var count=0;
    // function fn1(){
    //     count++;
    //     console.log(count)
    // }
    // //100ms内连续触发的调用,后一个调用会把前一个调用的等待处理掉,但每隔200ms至少执行一次
    // document.onmousemove=delayFn(fn1,100,200)
    delayFn: function(fn, delay, mustDelay) {
        var timer = null;
        var t_start;
        return function() {
            var context = this,
                args = arguments,
                t_cur = +new Date();
            //先清理上一次的调用触发(上一次调用触发事件不执行)
            clearTimeout(timer);
            //如果不存触发时间,那么当前的时间就是触发时间
            if (!t_start) {
                t_start = t_cur;
            }
            //如果当前时间-触发时间大于最大的间隔时间(mustDelay),触发一次函数运行函数
            if (t_cur - t_start >= mustDelay) {
                fn.apply(context, args);
                t_start = t_cur;
            }
            //否则延迟执行
            else {
                timer = setTimeout(function() {
                    fn.apply(context, args);
                }, delay);
            }
        };
    },
    //原生javascript加入收藏夹
    AddFavorite: function(sURL, sTitle) {
        try {
            window.external.addFavorite(sURL, sTitle)
        } catch (e) {
            try {
                window.sidebar.addPanel(sTitle, sURL, "")
            } catch (e) {
                alert("加入收藏失败,请使用Ctrl+D进行添加")
            }
        }
    },
    // 原生 JavaScript 实现字符串长度截取
    Cutstr: function(str, len) {
        var temp;
        var icount = 0;
        var patrn = /[^\x00-\xff]/;
        var strre = "";
        for (var i = 0; i < str.length; i++) {
            if (icount < len - 1) {
                temp = str.substr(i, 1);
                if (patrn.exec(temp) == null) {
                    icount = icount + 1
                } else {
                    icount = icount + 2
                }
                strre += temp
            } else {
                break
            }
        }
        return strre + "..."
    }
}

 

以上是关于常用的js库封装的主要内容,如果未能解决你的问题,请参考以下文章

常用的js库封装

常用JavaScript代码库(又名:WFang.js)

Chrome-Devtools代码片段中的多个JS库

js常用代码片段(更新中)

js常用代码片段

js 常用代码片段