jQuery实现表单的增删改查（完整版）
jQuery，js，增删改查，表单，数据，表格，本地存储，localstorage
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jQuery实现表单的增删改查
html代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="./font-awesome-4.7.0/css/font-awesome.min.css">
<style>
* {
margin: 0;
padding: 0;
}
.wrapper {
box-sizing: border-box;
position: relative;
width: 1349px;
margin: 0 auto;
padding-left: 175px;
}
.wrapper .add {
width: 110px;
line-height: 35px;
border-radius: 8px;
background-color: #327AB7;
color: #fff;
/* font-size: 18px;
font-weight: bold; */
text-align: center;
}
.top {
margin-top: 10px;
}
.top input {
line-height: 35px;
}
.top button {
line-height: 35px;
width: 80px;
background-color: #327AB7;
color: #fff;
border: none;
outline: none;
border-radius: 5px;
}
table tr {
width: 1000px;
text-align: left;
border-bottom: 1px solid lightgray;
/* background-color: #F9F9F9; */
}
th,
td {
width: 250px;
line-height: 50px;
float: left;
border-bottom: 1px solid lightgray;
}
tr span {
display: inline-block;
width: 60px;
line-height: 25px;
text-align: center;
color: #fff;
border-radius: 3px;
font-size: 14px;
margin-right: 10px;
}
tr .update {
background-color: #5CB75C;
}
tr .del {
background-color: #D9534F;
}
.bg1,
.bg2 {
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100vh;
background-color: rgba(0, 0, 0, 0.5);
display: none;
}
.addList,
.updateList {
position: relative;
z-index: 100;
/* top: 200px;
left: 200px; */
width: 400px;
height: 230px;
border: 1px solid gray;
border-radius: 5px;
/* display: none; */
background-color: #fff;
margin-left: 450px;
margin-top: 200px;
z-index: 100;
}
.addList input,
.updateList input {
/* outline: none; */
width: 380px;
line-height: 25px;
margin-top: 20px;
margin-left: 8px;
outline: skyblue;
/* border-radius: 3px; */
/* margin: 0 auto; */
}
.addList .title,
.updateList .title {
margin-top: 10px;
padding-left: 10px;
padding-bottom: 20px;
border-bottom: 1px solid lightgray;
}
.addList .btn,
.updateList .btn {
text-align: right;
margin-top: 10px;
padding-top: 10px;
padding-right: 10px;
border-top: 1px solid lightgray;
font-size: 14px;
}
.addList .btn .close,
.updateList .btn .close {
display: inline-block;
width: 50px;
line-height: 30px;
text-align: center;
border-radius: 2px;
border: 1px solid gray;
}
.addList .btn .qr,
.updateList .btn .qr {
display: inline-block;
width: 80px;
line-height: 30px;
text-align: center;
border-radius: 2px;
border: 1px solid gray;
background-color: #327AB7;
color: #fff;
}
</style>
</head>
<body>
<div class="wrapper">
<div class="add">
<i class="fa fa-plus"></i><span>添加记录</span>
</div>
<div class="top">
<input type="text" placeholder="请输入用户名">
<button><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
</div>
<table border="0">
<tr class="first">
<th>id</th>
<th>username</th>
<th>password</th>
<th>操作</th>
</tr>
<!-- <tr>
<td>1</td>
<td>张三</td>
<td>123456</td>
<td><span class="update"><i class="fa fa-pencil" aria-hidden="true"></i>修改</span><span class="del"><i
class="fa fa-trash" aria-hidden="true"></i>删除</span></td>
</tr> -->
</table>
<div class="bg1">
<div class="addList">
<div class="title">
添加记录
</div>
<div class="username">
<input type="text" placeholder="请输入用户名">
</div>
<div class="pwd">
<input type="password" placeholder="请输入密码">
</div>
<div class="btn">
<span class="close">关闭</span>
<span class="qr">确认添加</span>
</div>
</div>
</div>
<div class="bg2">
<div class="updateList">
<div class="title">
修改记录
</div>
<input type="hidden" class="hidden">
<div class="username">
<input type="text" placeholder="请输入用户名">
</div>
<div class="pwd">
<input type="password" placeholder="请输入密码">
</div>
<div class="btn">
<span class="close">关闭</span>
<span class="qr">确认修改</span>
</div>
</div>
</div>
</div>
</body>
</html>
本地存储
/********本地存储***************/
var ary;//声明用来接收本地存储的数组
var nextId = localStorage.nextId || 0;//nextId放与本地存储中
// 获取本地存储
function getInfo() {
return localStorage.list == undefined ? [] : JSON.parse(localStorage.list);
}
// 更新本地存储
function updateInfo() {
localStorage.list = JSON.stringify(ary);
ary = getInfo();
ary.forEach(function (item) {
if (item.nextId == nextId) {
nextId++;
localStorage.nextId = nextId;
} else {
localStorage.nextId = nextId;
}
})
}
// 添加数据到本地存储
function addInfo() {
//获取本地存储的内容
ary = getInfo();
// 定义对象，存入数据
var obj = {
nextId: nextId++,
username: $(".addList .username").children("input").val(),
password: $(".addList .pwd").children("input").val()
}
//存入数组
ary.push(obj);
//清空
$(".addList input").val("");
//隐藏
$(".bg1").stop(true).fadeOut();
alert("添加成功");
}
完整代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="./font-awesome-4.7.0/css/font-awesome.min.css">
<style>
* {
margin: 0;
padding: 0;
}
.wrapper {
box-sizing: border-box;
position: relative;
width: 1349px;
margin: 0 auto;
padding-left: 175px;
}
.wrapper .add {
width: 110px;
line-height: 35px;
border-radius: 8px;
background-color: #327AB7;
color: #fff;
/* font-size: 18px;
font-weight: bold; */
text-align: center;
}
.top {
margin-top: 10px;
}
.top input {
line-height: 35px;
}
.top button {
line-height: 35px;
width: 80px;
background-color: #327AB7;
color: #fff;
border: none;
outline: none;
border-radius: 5px;
}
table tr {
width: 1000px;
text-align: left;
border-bottom: 1px solid lightgray;
/* background-color: #F9F9F9; */
}
th,
td {
width: 250px;
line-height: 50px;
float: left;
border-bottom: 1px solid lightgray;
}
tr span {
display: inline-block;
width: 60px;
line-height: 25px;
text-align: center;
color: #fff;
border-radius: 3px;
font-size: 14px;
margin-right: 10px;
}
tr .update {
background-color: #5CB75C;
}
tr .del {
background-color: #D9534F;
}
.bg1,
.bg2 {
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100vh;
background-color: rgba(0, 0, 0, 0.5);
display: none;
}
.addList,
.updateList {
position: relative;
z-index: 100;
/* top: 200px;
left: 200px; */
width: 400px;
height: 230px;
border: 1px solid gray;
border-radius: 5px;
/* display: none; */
background-color: #fff;
margin-left: 450px;
margin-top: 200px;
z-index: 100;
}
.addList input,
.updateList input {
/* outline: none; */
width: 380px;
line-height: 25px;
margin-top: 20px;
margin-left: 8px;
outline: skyblue;
/* border-radius: 3px; */
/* margin: 0 auto; */
}
.addList .title,
.updateList .title {
margin-top: 10px;
padding-left: 10px;
padding-bottom: 20px;
border-bottom: 1px solid lightgray;
}
.addList .btn,
.updateList .btn {
text-align: right;
margin-top: 10px;
padding-top: 10px;
padding-right: 10px;
border-top: 1px solid lightgray;
font-size: 14px;
}
.addList .btn .close,
.updateList .btn .close {
display: inline-block;
width: 50px;
line-height: 30px;
text-align: center;
border-radius: 2px;
border: 1px solid gray;
}
.addList .btn .qr,
.updateList .btn .qr {
display: inline-block;
width: 80px;
line-height: 30px;
text-align: center;
border-radius: 2px;
border: 1px solid gray;
background-color: #327AB7;
color: #fff;
}
</style>
</head>
<body>
<div class="wrapper">
<div class="add">
<i class="fa fa-plus"></i><span>添加记录</span>
</div>
<div class="top">
<input type="text" placeholder="请输入用户名">
<button><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
</div>
<table border="0">
<tr class="first">
<th>id</th>
<th>username</th>
<th>password</th>
<th>操作</th>
</tr>
</table>
<div class="bg1">
<div class="addList">
<div class="title">
添加记录
</div>
<div class="username">
<input type="text" placeholder="请输入用户名">
</div>
<div class="pwd">
<input type="password" placeholder="请输入密码">
</div>
<div class="btn">
<span class="close">关闭</span>
<span class="qr">确认添加</span>
</div>
</div>
</div>
<div class="bg2">
<div class="updateList">
<div class="title">
修改记录
</div>
<input type="hidden" class="hidden">
<div class="username">
<input type="text" placeholder="请输入用户名">
</div>
<div class="pwd">
<input type="password" placeholder="请输入密码">
</div>
<div class="btn">
<span class="close">关闭</span>
<span class="qr">确认修改</span>
</div>
</div>
</div>
</div>
<script src="./js/jquery-3.6.0.min.js"></script>
<script>
$(function () {
//模态窗高度自动充满整个屏幕
$(window).scroll(function () {
var height = $(window).outerHeight();
var scroll = $(document).scrollTop();
$(".bg1").css("height", `${height + scroll}px`)
$(".bg2").css("height", `${height + scroll}px`)
})
//添加点击事件
$(".add").click(function () {
$(".bg1").stop(true).fadeIn();
})
//关闭点击事件
$(".bg1 .addList .close").click(function () {
$(".bg1").stop(true).fadeOut();
})
//关闭点击事件
$(".updateList .close").click(function () {
$(".bg2").stop(true).fadeOut();
})
/***********点击事件***************/
// 添加本地存储
$(".addList .qr").click(function () {
addInfo();
//更新本地存储
updateInfo();
// 渲染
show();
//tr背景色
bgColor();
})
// 查询
$(".top button").click(function () {
findInfo();
bgColor();
})
//删除
$("table").on('click', '.del', function () {
// 得到点击对象的nextId
var id = this.parentNode.parentNode.firstElementChild.innerText;
delInfo(id);
show();
bgColor();
})
// 修改
$("table").on('click', '.update', function () {
//得到修改数据的nextId
var getId = this.parentNode.parentNode.firstElementChild.innerText;
$(".hidden").val(getId);
update(getId)
})
$(".updateList .qr").click(function () {
qr();
show();
bgColor();
})
/********本地存储***************/
var ary;//声明用来接收本地存储的数组
var nextId = localStorage.nextId || 0;//nextId放与本地存储中
// 获取本地存储
function getInfo() {
return localStorage.list == undefined ? [] : JSON.parse(localStorage.list);
}
// 更新本地存储
function updateInfo() {
localStorage.list = JSON.stringify(ary);
ary = getInfo();
ary.forEach(function (item) {
if (item.nextId == nextId) {
nextId++;
localStorage.nextId = nextId;
} else {
localStorage.nextId = nextId;
}
})
}
// 添加数据到本地存储
function addInfo() {
//获取本地存储的内容
ary = getInfo();
// 定义对象，存入数据
var obj = {
nextId: nextId++,
username: $(".addList .username").children("input").val(),
password: $(".addList .pwd").children("input").val()
}
//存入数组
ary.push(obj);
//清空
$(".addList input").val("");
//隐藏
$(".bg1").stop(true).fadeOut();
alert("添加成功");
}
/*********************渲染**************************/
// 4、渲染
show();//加载时渲染
function show() {
ary = getInfo();
//清空除了表头的tr内容
$("tr:not(.first)").hide();
//遍历添加tr
for (var item of ary) {
var tr = $(`<tr>
<td class="id">${item.nextId}</td>
<td>${item.username}</td>
<td>${item.password}</td>
<td><span class="update"><i class="fa fa-pencil" aria-hidden="true"></i>修改</span><span class="del"><i
class="fa fa-trash" aria-hidden="true"></i>删除</span></td>
</tr>`)
$("table").append(tr);
}
}
/*********************************************/
/******************查询************************/
function findInfo() {
//得到输入框的内容
var val = $(".top input").val();
//过滤出符合的数组对象
var ary1 = ary.filter(function (item) {
// return JSON.stringify(item).includes(val) == true;
return item.username.includes(val) == true;
})
//清空
$("tr:not(.first)").hide();
//渲染查询出来的数据
for (var tag of ary1) {
var tr = $(`<tr>
<td class="id">${tag.nextId}</td>
<td>${tag.username}</td>
<td>${tag.password}</td>
<td><span class="update"><i class="fa fa-pencil" aria-hidden="true"></i>修改</span><span class="del"><i
class="fa fa-trash" aria-hidden="true"></i>删除</span></td>
</tr> `)
$("table").append(tr);
}
}
/****************删除*************************/
function delInfo(id) {
// 获取其在数组中的下标
var index = ary.findIndex(item => item.nextId == id);
if (confirm("确认删除吗？")) {
//从数组中删除
ary.splice(index, 1);
updateInfo();
}
}
/**************修改************************/
function update(getId) {
//将数据事先加载到修改框中
for (var item of ary) {
if (item.nextId == getId) {
$(".updateList .username").children("input").val(item.username)
$(".updateList .pwd").children("input").val(item.password)
}
}
$(".bg2").stop(true).fadeIn();
}
/***********确认按钮*********************/
function qr() {
//拿到修改数据的nextId
var num = $(".hidden").val();
ary = getInfo();
// 遍历数组找到目标数据，并进行修改
for (var item of ary) {
if (item.nextId == num) {
item.username = $(".updateList .username").children("input").val();
item.password = $(".updateList .pwd").children("input").val();
$(".updateList .username").children("input").val("")
$(".updateList .pwd").children("input").val("");
}
};
updateInfo();
$(".bg2").stop(true).fadeOut();
}
/******************背景色**********************/
//tr背景色
bgColor();
function bgColor() {
$("tr:even").css("background-color", "#FEFEFE");
$("tr:odd").css("background-color", "#F9F9F9");
}
})
</script>
</body>
</html>
效果图：
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