一些公用的JS

Posted 2020-12-06 黑色白沙的园子

/*阻止冒泡*/
function preventBubble(event){
    var e=arguments.callee.caller.arguments[0]||event; //若省略此句，下面的e改为event，IE运行可以，但是其他浏览器就不兼容
    if (e && e.stopPropagation) {
    e.stopPropagation();
    } else if (window.event) {
    window.event.cancelBubble = true;
    }
}
/*页面跳转*/
function go_page(url){
    location.href = url
}
/*数组中按值删除*/
function removeByValue(arr, val) {
  for(var i=0; i<arr.length; i++) {
    if(arr[i] == val) {
      arr.splice(i, 1);
      break;
    }
  }
  return arr
}
/*数组去重*/
function ArrayClearRepeat(arr){
    var new_arr=[];
    for(var i=0;i<arr.length;i++) {
        var items=arr[i];
        //判断元素是否存在于new_arr中，如果不存在则插入到new_ar中
        if($.inArray(items,new_arr)==-1) {
        new_arr.push(items);
        }
    }
    return new_arr
}
/*随机数生成*/
function randomString(len) {
　　len = len || 32;
　　var $chars = ‘ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678‘;    /****默认去掉了容易混淆的字符oOLl,9gq,Vv,Uu,I1****/
　　var maxPos = $chars.length;
　　var pwd = ‘‘;
　　for (i = 0; i < len; i++) {
　　　　pwd += $chars.charAt(Math.floor(Math.random() * maxPos));
　　}
　　return pwd;
}

function isNum(the_str){
    var is_val = parseInt(the_str);//如果变量val是字符类型的数则转换为int类型 如果不是则is_val为NaN
    if(!isNaN(is_val)){
        return true
    } else{
        return false
    }
}


function getLocalTime(i) {
    //参数i为时区值数字，比如北京为东八区则输进8,西5输入-5
    if (typeof i !== ‘number‘) return;
    var d = new Date();
    //得到1970年一月一日到现在的秒数
    var len = d.getTime();
    //本地时间与GMT时间的时间偏移差
    var offset = d.getTimezoneOffset() * 60000;
    //得到现在的格林尼治时间
    var utcTime = len + offset;
    return new Date(utcTime + 3600000 * i);
}
/**
* 带滚动条抬头和内容对齐

/*判断两个数组是否相同*/
    sameArray: function(arr1, arr2) {
        if (arr1.length == arr2.length) {
            var arr3 = [];
            for (var key in arr1) {
                var stra = arr1[key];
                var count = 0;
                for (var j = 0; j < arr2.length; j++) {
                    var strb = arr2[j];
                    if (stra == strb) {
                        count++;
                    }
                }
                if (count === 0) { //表示数组1的这个值没有重复的，放到arr3列表中  
                    arr3.push(stra);
                }
            }
            if (arr3 != []) {
                return true
            } else {
                return false
            }
        } else {
            return false
        }
    },

// beta64方法
    getBase64: function(file, callback) {
        var maxWidth = 640;
        if (file.files && file.files[0]) {
            var thisFile = file.files[0];
            if (thisFile.size > 2019200) {
                // mualert.alertBox("图片不能超过800K");
                alert("2M以内の画像を選択してください！");
                return
            };
            var reader = new FileReader();
            reader.onload = function(event) {
                var imgUrl = event.target.result;
                var img = new Image();
                img.onload = function() {
                    var canvasId = ‘canvasBase64Imgid‘,
                        canvas = document.getElementById(canvasId);
                    if (canvas != null) { document.body.removeChild(canvas); }
                    var canvas = document.createElement("canvas");
                    canvas.innerhtml = ‘New Canvas‘;
                    canvas.setAttribute("id", canvasId);
                    canvas.style.display = ‘none‘;
                    document.body.appendChild(canvas);
                    canvas.width = this.width;
                    canvas.height = this.height;
                    var imageWidth = this.width,
                        imageHeight = this.height;
                    if (this.width > maxWidth) {
                        imageWidth = maxWidth;
                        imageHeight = this.height * maxWidth / this.width;
                        canvas.width = imageWidth;
                        canvas.height = imageHeight;
                    }
                    var context = canvas.getContext(‘2d‘);
                    context.clearRect(0, 0, imageWidth, imageHeight);
                    context.drawImage(this, 0, 0, imageWidth, imageHeight);
                    var base64 = canvas.toDataURL(‘image/png‘, 1);
                    var imgbase = base64.substr(22);
                    callback(imgbase)
                        //this.imgUrl = 
                }
                img.src = imgUrl;
            }
            reader.readAsDataURL(file.files[0]);
        }
    },
    // 数组比较，输出不同，A数组为max数组
    array_comparison: function(array, array2) {
        var arr3 = [];
        for (key in array) {
            var stra = array[key];
            var count = 0;
            for (var j = 0; j < array2.length; j++) {
                var strb = array2[j];
                if (stra == strb) {
                    count++;
                }
            }
            if (count === 0) { //表示数组1的这个值没有重复的，放到arr3列表中  
                arr3.push(stra);
            }
        }
        return arr3
    },
    //
    Sort_by_date:function(data_list,orderType){

        for(var index in data_list){
            let time_arr = data_list[index].date.split(".")
            let time_nums = time_arr.length
            let times = null
            if(time_nums==1){
                let year = time_arr[0]
                times = Number(year)*10000 
            }

            if(time_nums==2){
                let year = time_arr[0]
                let mouth = time_arr[1]
                if(mouth<10){
                    mouth = ‘0‘ + mouth
                }
                times = Number(year)*10000 + Number(mouth)*100 
            }

            if(time_nums==3){
                let year = time_arr[0]
                let mouth = time_arr[1]
                let day = time_arr[2]
                if(mouth<10){
                    mouth = ‘0‘ + mouth
                }
                if(day<10){
                    day = ‘0‘ + day
                }
                times = Number(year)*10000 + Number(mouth)*100 + Number(day)*1
            }
            
            data_list[index][‘temp_date_num‘] = times
        }

        if (orderType!==0){
            data_list.sort(function (p1,p2) { 
                //如果返回负数，p1在前，返回正数，p2在前
                //1代表升序，2代表降序
                if (orderType===2){
                    return p2.temp_date_num-p1.temp_date_num;
                } else {
                    return p1.temp_date_num-p2.temp_date_num;
                }

            })
        }
        return data_list;
    },
    Sort_by_date_mouth:function(data_list,orderType){

        for(var index in data_list){
            let time_arr = data_list[index].year_month.split(".")
            let year = time_arr[0]
            let mouth = time_arr[1]
            if(mouth<10){
                mouth = ‘0‘ + mouth
            }
            let times = Number(year)*10000 + Number(mouth)*100 
            data_list[index][‘temp_date_num‘] = times
        }

        if (orderType!==0){
            data_list.sort(function (p1,p2) { 
                //如果返回负数，p1在前，返回正数，p2在前
                //1代表升序，2代表降序
                if (orderType===2){
                    return p2.temp_date_num-p1.temp_date_num;
                } else {
                    return p1.temp_date_num-p2.temp_date_num;
                }

            })
        }
        return data_list;
    },
//对数组进行去重
    Array_deduplication: function(arr){
        var new_arr=[];
        for(var i=0;i<arr.length;i++) {
        　　var items=arr[i];
        　　//判断元素是否存在于new_arr中，如果不存在则插入到new_arr的最后
        　　if($.inArray(items,new_arr)==-1) {
        　　　　new_arr.push(items);
        　　}
        }
        new_arr = new_arr.sort(this.sortNumber);
        return new_arr
    },
    //对数组进行排序
    sortNumber:function(a,b) {
        return a - b;
    },
    //
    searchList:function(str, container){
        var newList = [];
        //新的列表
        var startChar = str.charAt(0);
        //开始字符
        var strLen = str.length;
        //查找符串的长度
        for (var i = 0; i < container.length; i++) {
            var obj = container[i];
            var isMatch = false;
            for (var p in obj) {
                if (typeof (obj[p]) == "function") {
                    obj[p]();
                } else {
                    var curItem = "";
                    if (obj[p] != null) {
                        curItem = obj[p];
                    }
                    for (var j = 0; j < curItem.length; j++) {
                        if (curItem.charAt(j) == startChar)
                        {
                            if (curItem.substring(j).substring(0, strLen) == str)
                            {
                                isMatch = true;
                                break;
                            }
                        }
                    }
                }
            }
            if (isMatch) {
                newList.push(obj);
            }
        }
        return newList;
    },
    // js sort方法根据数组中对象的某一个属性值进行排序  arr.sort(compare_list_by_key(‘age‘))
    compare_list_by_key:function(property){
        return function(a,b){
            var value1 = a[property];
            var value2 = b[property];
            return value1 - value2;
        }
    },
    getLocalTime:function (i) {
        //参数i为时区值数字，比如北京为东八区则输进8,西5输入-5
        if (typeof i !== ‘number‘) return;
        var d = new Date();
        //得到1970年一月一日到现在的秒数
        var len = d.getTime();
        //本地时间与GMT时间的时间偏移差
        var offset = d.getTimezoneOffset() * 60000;
        //得到现在的格林尼治时间
        var utcTime = len + offset;
        return new Date(utcTime + 3600000 * i);
    },
    GetDay:function(i){
        i = !i ? 0 : i;
        var day1 = new Date();
        day1.setTime(day1.getTime()+i*(24*60*60*1000));
        let year = day1.getFullYear()
        let month = (day1.getMonth()+1)
        month = month < 10 ? "0"+month : month;
        let days = day1.getDate()
        var s1 = year + "-" + month + "-" + days;
        return s1
    },
    DateDiff:function(sDate1, sDate2) {  //sDate1和sDate2是yyyy-MM-dd格式
        var aDate, oDate1, oDate2, iDays;
        aDate = sDate1.split("-");
        oDate1 = new Date(aDate[1] + ‘-‘ + aDate[2] + ‘-‘ + aDate[0]);  //转换为yyyy-MM-dd格式
        aDate = sDate2.split("-");
        oDate2 = new Date(aDate[1] + ‘-‘ + aDate[2] + ‘-‘ + aDate[0]);
        iDays = parseInt(Math.abs(oDate1 - oDate2) / 1000 / 60 / 60 / 24); //把相差的毫秒数转换为天数
     
        return iDays;  //返回相差天数
    },
    // 字典是否在一个数组中 {} in [] 按照关键字判断
    dict_in_array:function(_dict, _array, _field){
        var _init = false
        for(var index in _array){
            if(_array[index][_field]==_dict[_field]){
                _init = true
            }
        }
        return _init
    }

 

*/
function Scroll_bar_widening(ul,title){
    setTimeout(() => {
        $("."+ul).scrollTop(10);//控制滚动条下移10px
        if( $("."+ul).scrollTop()>0 ){
            $("."+title).css({
                "padding-right": ‘17px‘
            })
        }else{
            $("."+title).css({
                "padding-right": ‘0‘
            })
        }
        $("."+ul).scrollTop(0);//滚动条返回顶部
    }, 100);
}