如何利用原生的js实现基本的增删改查功能
2017-07-11 · 百度知道合伙人官方认证企业
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直接给个例子吧
包含两个文件（index.jsp 和 index.js）
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
</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">
×
</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>
复制代码
复制代码
//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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