JavaScript之实现基本的增删改查功能

Posted 阿_毅

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开心一笑

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视频教程

CSDN学院:

http://edu.csdn.net/lecturer/994

腾讯学院:

https://huangwy.ke.qq.com/

网易学院:

http://study.163.com/instructor/1035331499.htm

提出问题

如何利用原生的js实现基本的增删改查功能

解决问题

包含两个文件(index.jsp  和  index.js)

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <!-- Bootstrap -->
    <link href="resource/bootstrap/css/bootstrap.min.css" rel="stylesheet" media="screen">
    <link href="resource/bootstrap/css/bootstrap-theme.min.css" rel="stylesheet" media="screen">
    <title>JS框架学习</title>

    </head>
    <body onload="loadUserDatas()">
    <div class="container">
    <table class="table" id="table">
       <caption><h2>迈睿练习一</h2></caption>
       <caption>
               <button type="button" class="btn btn-info" id="user_add" data-toggle="modal" 
       data-target="#myModal" onclick="optionUserData(this);">新增</button>
               <button type="button" class="btn btn-info" id="user_delete" onclick="optionUserData(this);">删除</button>
               <button type="button" class="btn btn-info" id="user_edit"  data-toggle="modal" 
       data-target="#myModal"  onclick="optionUserData(this);">编辑</button>
               <button type="button" class="btn btn-info" id="user_find" onclick="optionUserData(this);">查询</button>
               <input type="text" id="s_code" placeholder="按工号查询" style="width: 80px;">
               <input type="text" id="s_userName" placeholder="按姓名查询" style="width: 80px;">
               <input type="text" id="s_all" placeholder="全文搜索" style="width: 80px;">
       </caption>
       <thead>
          <tr>
               <th>序号</th>
             <th>工号</th>
             <th>姓名</th>
             <th>性别</th>
             <th>密码</th>
             <th>年龄</th>
             <th>出生日期</th>
          </tr>
       </thead>
       <tbody id="tbody">
       </tbody>
    </table>

    <!-- 模态框(Modal) -->
    <div class="modal hide" id="myModal"  role="dialog" >
       <div class="modal-dialog">
          <div class="modal-content">
             <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true"> 
                      &times;
                </button>
                <h4 class="modal-title" id="myModalLabel">
                       新增用户
                </h4>
             </div>
             <div class="modal-body" id="modal-body">
                <label for="name">工号:</label>
                  <input type="text" class="form-control" id="m_code" placeholder="请输入工号">
                  <label for="name">姓名:</label>
                  <input type="text" class="form-control" id="m_userName" placeholder="请输入姓名">
                  <label for="name">性别:</label>
                  <input type="text" class="form-control" id="m_sex" placeholder="请输入性别">
                  <label for="name">密码:</label>
                  <input type="text" class="form-control" id="m_passWord" placeholder="请输入密码">
                 <label for="name">年龄:</label>
                  <input type="text" class="form-control" id="m_age" placeholder="请输入年龄">
                  <label for="name">出生日期:</label>
                  <input type="text" class="form-control" id="m_birthday" placeholder="请输入出生日期">
             </div>
             <div class="modal-footer">
                <button type="button" class="btn btn-default" 
                   data-dismiss="modal">保存
                </button>
                <button type="button" class="btn btn-primary">提交更改</button>
             </div>
          </div><!-- /.modal-content -->
    </div><!-- /.modal -->
    </div>

    <script type="text/javascript" src="resource/jquery/jquery.js"></script>
    <script type="text/javascript" src="resource/bootstrap/js/bootstrap.min.js"></script>
    <script type="text/javascript" src="index.js"></script>
    </body>
    </html>

以下为index.js代码

//存放所有用户
        var users = users || ;
        //操作类型
        var operateType = "";
        //存放搜索对象
        var searchUsers = searchUsers || ;
        //用户构造方法
        var User = 
                Create:function(code,userName,sex,passWord,age,birthday)
                    this.code = code;
                    this.userName = userName;
                    this.sex = sex;
                    this.passWord = passWord;
                    this.age = age;
                    this.birthday = birthday;
                ,
                //添加用户
                addUserData:function()
                    if(this.code != "")
                        users[this.code] = this;
                    
                ,
                //删除用户
                deleteUserData:function ()
                    for(var i in users)
                        if(this.code == users[i].code)
                            delete users[i];
                        
                    
                ,
                //编辑用户
                editUserData:function()
                    for(var i in users)
                        if(this.code == users[i].code)
                            users[i].userName = this.userName;
                            users[i].sex = this.sex;
                            users[i].passWord = this.passWord;
                            users[i].birthday = this.birthday;
                            users[i].age = this.age;
                        
                    
                ,
                //查找用户
                findUserData:function(data)

                    for(var i in users)
                        if(data.code.indexOf(users[i].code) >= 0 || 
                                data.userName.indexOf(users[i].userName) >= 0)
                            searchUsers[users[i].code] = users[i];
                            refreshDatas(searchUsers);
                        
                    
                
        ;

        function New(aClass,aParams)
            function new_()
                aClass.Create.apply(this,aParams);
            
            new_.prototype = aClass;
            return new new_();
        

        //bootstrap模态框事件
        $('#myModal').on('hide.bs.modal', function () 
            // 执行一些动作...
            var inputElements = this.getElementsByTagName("input");
            var userArr = [];
            for(var i=0;i<inputElements.length;i++)
                userArr[i] = inputElements[i].value;
            
            var user = New(User,userArr);
            //添加操作
            if(operateType == "add")
                user.addUserData();
                refreshDatas(users);
            //编辑操作
            else if(operateType == "edit")
                user.editUserData();
                refreshDatas(users);
            
        );

        /**
         * 首次加载页面执行方法
         */
        function loadUserDatas()
            var userArray = initUserDatas();
            addRowData(userArray);
            refreshDatas(users);

        
        /**
         * 初始化用户数据
         */
        function initUserDatas()
            var initUser1 = New(User,["1001","小兰","女","1234","13","1991-1-1"]);
            var initUser2 = New(User,["1002","小毅","男","1234","13","1991-1-1"]);
            var initUser3 = New(User,["1003","兰花","女","1234","13","1991-1-1"]);
            var initUser4 = New(User,["1004","兰儿","女","1234","13","1991-1-1"]);
            users[initUser1.code] = initUser1;
            users[initUser2.code] = initUser2;
            users[initUser3.code] = initUser3;
            users[initUser4.code] = initUser4;
            return users;
        

        /**
         * 往表格添加一行html数据
         */
        function addRowData(datas)
            var tbodyElement = document.getElementById("tbody");
            var html = "";
            var color = "warning";
            var flag = true;
            for(var i in datas)
                if(flag)
                    color = "info";
                else
                    color = "warning";
                
                html = html +  "<tr class='"+ color +"'><td style='width:30px;'><input type='checkbox'></td><td id='code'>"
                        + datas[i].code +"</td><td id='userName'>"
                        + datas[i].userName +"</td><td id='sex'>"
                        + datas[i].sex +"</td><td id='passWord'>"
                        + datas[i].passWord +"</td><td id='age'>"
                        + datas[i].age +"</td><td id='birthday'>"
                        + datas[i].birthday +"</td>" 
                        +"</tr>";

                flag = !flag;//颜色转换
            
            tbodyElement.innerHTML = html;
        
        /**
         * 刷新用户数据
         */
        function refreshDatas(datas)
            addRowData(datas);
        ;

        /**
         * 收集一行数据
         */
        function collectionRowData(param)
            var tdElement = param.getElementsByTagName("td");
            var userArr = [];
            for(var i=1;i<tdElement.length;i++)
                var temp =  tdElement[i].textContent;
                userArr[i-1] = temp;
            
            var user = New(User,userArr);
            return user;
        
        /**
         * 用户操作方法
         */
        function optionUserData(param)
            //获得操作类别
            var optionType = param.getAttribute("id");
            if(optionType == "user_add")
                operateType = "add";
            else if(optionType == "user_delete")
                var checkRowData = isCheckedData();
                var user = collectionRowData(checkRowData);
                user.deleteUserData();
                refreshDatas(users);
            else if(optionType == "user_edit")
                operateType = "edit";
                var checkRowData = isCheckedData();
                var user = collectionRowData(checkRowData);
                var modal_body = document.getElementById("modal-body");
                var inputElements=  modal_body.getElementsByTagName("input");
                for(var i=0;i<inputElements.length;i++)
                    var temp = inputElements[i].id.substring(2,inputElements[i].id.length)
                    inputElements[i].value = user[temp];
                
            else if(optionType == "user_find")
                var s_code =  document.getElementById("s_code").value;
                var s_userName =  document.getElementById("s_userName").value;
                var s_all=  document.getElementById("s_all").value;
                //搜索数据
                var s_data = s_data || ;
                s_data.code = s_code;
                s_data.userName = s_userName;
                s_data.all = s_all;
                var user = New(User,[]);
                user.findUserData(s_data);
            else

            
        

        /**
         * 是否选中数据,返回选中数据的行
         */
        function isCheckedData()
            var tbodyElement =document.getElementById("tbody");
            var trElements = tbodyElement.getElementsByTagName("tr");
            var flag = false;
            for(var i=0;i<trElements.length;i++)
                var inputElement = trElements[i].getElementsByTagName("input")[0];
                if(inputElement.checked)
                    flag = true;
                    return trElements[i];
                
            
            if(!flag)
                alert("请选择一条记录!");
                $('#myModal').unbind("on");
            
        

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其他

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