WEB前端--JQuery

jQuery

用法：http://www.php100.com/manual/jquery/

教程：http://www.w3school.com.cn/jquery/index.asp


一、jQuery基础

1、创建jQuery对象

  • $  ==>  相当于创建一个jQuery对象-->$=jQuery()

  • $('#id')  ==>  相当于document.getElementById('id')，找到id是‘id’的元素。

  • $() ==> 主体框架加载完成

  • $(document).ready(function(){}) ==> 页面文档加载完成后执行函数

2、当页面框架加载完成，执行这里面的代码.

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<script type="text/javascript" src="jquery-2.1.4.js"></script>
<script type="text/javascript">
    $(function(){
        alert('当页面框架加载完成，执行这里面的代码.');
    });
</script>

3、把id=i1的元素值改成456

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<div id="i1">123</div>
<script type="text/javascript" src="jquery-2.1.4.js"></script>
<script type="text/javascript">
    $(function(){
        $('#i1').text('456');
    });
</script>

4、增加样式

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    <style>
        .red{
            background-color: red;
        }
    </style>
 
<div id="i1" class="c1">123</div>
<script type="text/javascript" src="jquery-2.1.4.js"></script>
<script type="text/javascript">
    $(function(){
        $('.c1').addClass('red')
    });
</script>

5、map​

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <table>
        <thead></thead>
        <tbody>
            <tr>
                <td>1</td>
                <td>2</td>
                <td>3</td>
                <td onclick="get_prev(this)">编辑</td>
            </tr>
        </tbody>
    </table>
    <script type="text/javascript" src="jquery-2.1.4.min.js"></script>
    <script type="text/javascript">
        function get_prev(arg){
            //$(arg).siblings(),所有兄弟标签
            //循环多个标签中的每一个标签
            //每一个标签被循环时，都会执行map内部的函数并获取其返回值
            //将所有的返回值封装到一个数组（列表）中
            //返回列表
            var list=$(arg).siblings().map(function(){
                //当前循环的标签
                return $(this).text();
            });
            console.log(list[0],list[1],list[2]);
        }
    </script>
</body>
</html>


更多用法：http://www.php100.com/manual/jquery/

二、jQuery使用

1、this和$(this)区别

  • this是HTML的一个元素（id为textbox），直接改元素的属性：this.title="ok"

  • $(this)是一个jQuery对象，后面要跟jQuery属性，如：$(this).attr('title','ok')

this举例：
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$("#textbox").hover(
    function() {  
        this.title = "Test";
    },  
    fucntion() {  
        this.title = "OK”;  
    }
);
$(this)举例：
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$("#textbox").hover(
    function() {
        $(this).attr("title","Test");
    },
    fucntion() {
        $(this).attr("title","ok");
    }
);


三、实例

1、返回顶部

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        .back{
            position: fixed;
            bottom: 0px;
            right: 0px;
        }
        .hide{
            display: none;
        }
    </style>
</head>
<body>
 
<div style="height: 2000px;"></div>
 
<div onclick="GoTop()" class="back hide">返回顶部</div>
 
<script src="jquery-2.1.4.js"></script>
<script type="text/javascript">
 
    function GoTop(){
        //返回顶部
        $(window).scrollTop(0);
    }
 
    $(function(){
 
        $(window).scroll(function(){
            //当滚动滑轮时，执行函数体
 
            //获取当前滑轮滚动的高度
            var top = $(window).scrollTop();
 
            if(top>100){
                //展示“返回顶部”
                $('.back').removeClass('hide');
            }else{
                //隐藏“返回顶部”
                $('.back').addClass('hide');
            }
        });
    });
 
</script>
 
</body>
</html>

2、多选框

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<!DOCTYPE html>
<html>
    <head>
        <meta charset='utf-8' />
        <title></title>
        <script src='jquery-2.1.4.js'></script>
        <script type="text/javascript">
            $(function(){
                $('#selectAll').click(function(){
                    $('#checklist :checkbox').attr('checked',true);
                });
                $('#unselectAll').click(function(){
                    $('#checklist :checkbox').attr('checked',false);
                });
                $('#reverseAll').click(function(){
                    $('#checklist :checkbox').each(function(){
                        $(this).attr('checked',!$(this).attr('checked'))
                    })
                })
 
            })           
        </script>
    </head>
    <body>
        <div id='checklist'>
            <input type='checkbox' value='1'/>篮球
            <input type='checkbox' value='2'/>足球
            <input type='checkbox' value='3'/>羽毛球
        </div>
        <input type='button' value='全选' id='selectAll' />
        <input type='button' value='不选' id='unselectAll' />
        <input type='button' value='反选' id='reverseAll' />
    </body>
</html>

暂时不太好使

3、菜单

列出详细菜单列表，其它的收回。

css：
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.hide{
    display: none;
}
 
.container{
    width:300px;
    height: 600px;
    background-color: #ddd;
    border: 1px solid #999;
}
 
.container .title{
    height: 38px;
    font-size: 28px;
    line-height: 38px;
    background-color: orange;
    cursor: pointer;
}
 
.container .body{
    background-color:white;
}
 
.container .body a{
    display:block;
    padding: 10px;
}
html：
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<!DOCTYPE html>
<html>
    <head>
        <meta charset='utf-8' />
        <link rel="stylesheet" type="text/css" href="common.css" />
        <script type="text/javascript" src='jquery-2.1.4.js'></script>
 
    </head>
    <body>
        <div class='container'>
            <div>
                <div class='title'>Menu1</div>
                <div class='body'>
                    <a href="">content1</a>
                    <a href="">content2</a>
                    <a href="">content3</a>
                </div>
            </div>
 
            <div>
                <div class='title'>Menu1</div>
                <div class='body hide'>
                    <a href="">content1</a>
                    <a href="">content2</a>
                    <a href="">content3</a>
                </div>
            </div>
 
            <div>
                <div class='title'>Menu1</div>
                <div class='body hide'>
                    <a href="">content1</a>
                    <a href="">content2</a>
                    <a href="">content3</a>
                </div>
            </div>
             
            <div>
                <div class='title'>Menu1</div>
                <div class='body hide'>
                    <a href="">content1</a>
                    <a href="">content2</a>
                    <a href="">content3</a>
                </div>
            </div>
             
            <div>
                <div class='title'>Menu1</div>
                <div class='body hide'>
                    <a href="">content1</a>
                    <a href="">content2</a>
                    <a href="">content3</a>
                </div>
            </div>
 
        </div>
 
        <script type="text/javascript">
            $(function(){
                $('.title').click(function(){
                    $(this).parent().siblings().children('.body').addClass('hide');
                    $(this).next().removeClass('hide');
                });
            });
        </script>
    </body>
</html>
效果：



4、tab菜单

css：
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/*公共开始*/
body {
    margin: 0 auto;
    font-family: Arial;
    _font-family: 宋体,Arial;
    font-size: 12px;
}
body, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, button, textarea, p, blockquote, th, td, figure, div {
    margin: 0;
    padding: 0;
}
 
ol, ul, li {
    list-style: none;
}
a{
    cursor:pointer;
    text-decoration:none;
}
/*a:hover{
    color: #F60 !important;
    text-decoration: underline;
}*/
img{
    border:none;
    border-width:0px;
}
table{
    border-collapse: collapse;
    border-spacing: 0;
}
 
.red{
    color: #c00!important;
}
.m8{
    margin:8px;
}
.mt10{
    margin-top:10px;
}
.mt20{
    margin-top:20px;
}
.mr5{
    margin-right:5px;
}
.ml5{
    margin-left:5px;
}
 
.ml10{
    margin-left:10px;
}
 
.mb10{
    margin-bottom:10px;
}
.pt18{
    padding-top:18px;
}
.pt20{
    padding-top:20px;
}
.pb20{
    padding-bottom:20px;
}
.nbr{
    border-right:0px;
}
.font12{
    font-size:12px;
}
.font14{
    font-size:14px;
}
.font16{
    font-size:16px;
}
.bold{
    font-weight:bold;
}
.left{
    float:left;
}
.right{
    float:right;
}
.hide{
    display:none;
}
.show{
     display:table;
}
.clearfix{
    clear:both;
}
.clearfix:after {
    content: ".";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}
* html .clearfix {zoom: 1;}
 
.container{
    width:1190px;
    margin-left:auto;
    margin-right:auto;
 
}
 
.group-box-1 .title{
    height: 33px;
    line-height: 33px;
    border: 1px solid #DDD;
    background: #f5f5f5;
    padding-top: 0;
    padding-left: 0;
 
}
.group-box-1 .title .title-font{
    display: inline-block;
    font-size: 14px;
    font-family: 'Microsoft Yahei','SimHei';
    font-weight: bold;
    color: #333;
    padding-left: 10px;
}
.group-box-1 .body {
    border: 1px solid #e4e4e4;
    border-top: none;
}
 
.tab-menu-box1 {
    border: 1px solid #ddd;
    margin-bottom: 20px;
}
 
.tab-menu-box1 .menu {
    line-height: 33px;
    height: 33px;
    background-color: #f5f5f5;
}
 
.tab-menu-box1 .content {
    min-height: 100px;
    border-top: 1px solid #ddd;
    background-color: white;
}
 
.tab-menu-box1 .menu ul {
    padding: 0;
    margin: 0;
    list-style: none;
    /*position: absolute;*/
}
 
.tab-menu-box1 .menu ul li {
    position: relative;
    float: left;
    font-size: 14px;
    font-family: 'Microsoft Yahei','SimHei';
    text-align: center;
    font-size: 14px;
    font-weight: bold;
    border-right: 1px solid #ddd;
    padding: 0 18px;
    cursor: pointer;
}
 
.tab-menu-box1 .menu ul li:hover {
    color: #c9033b;
}
 
.tab-menu-box1 .menu .more {
    float: right;
    font-size: 12px;
    padding-right: 10px;
    font-family: "宋体";
    color: #666;
    text-decoration: none;
}
 
.tab-menu-box1 .menu a:hover {
    color: #f60 !important;
    text-decoration: underline;
}
 
.tab-menu-box1 .menu .current {
    margin-top: -1px;
    color: #c9033b;
    background: #fff;
    height: 33px;
    border-top: 2px solid #c9033b;
    z-index: 10;
}
 
.tab-menu-box-2 .float-title {
    display: none;
    top: 0px;
    position: fixed;
    z-index: 50;
}
 
.tab-menu-box-2 .title {
    width: 890px;
    border-bottom: 2px solid #b20101;
    border-left: 1px solid #e1e1e1;
    clear: both;
    height: 32px;
}
 
.tab-menu-box-2 .title a {
    float: left;
    width: 107px;
    height: 31px;
    line-height: 31px;
    font-size: 14px;
    font-weight: bold;
    text-align: center;
    border-top: 1px solid #e1e1e1;
    border-right: 1px solid #e1e1e1;
    background: url(/Content/images/bg4.png?3) 0 -308px repeat-x;
    text-decoration: none;
    color: #333;
    cursor: pointer;
}
 
.tab-menu-box-2 .title a:hover {
    background-position: -26px -271px;
    text-decoration: none;
    color: #fff;
}
 
.tab-menu-box-2 .content {
    min-height: 100px;
    background-color: white;
}
 
 
.tab-menu-box3 {
    border: 1px solid #ddd;
}
 
.tab-menu-box3 .menu {
    line-height: 33px;
    height: 33px;
    background-color: #f5f5f5;
}
 
.tab-menu-box3 .content {
    height: 214px;
    border-top: 1px solid #ddd;
    background-color: white;
}
 
.tab-menu-box3 .menu ul {
    padding: 0;
    margin: 0;
    list-style: none;
    /*position: absolute;*/
}
 
.tab-menu-box3 .menu ul li {
    position: relative;
    float: left;
    font-size: 14px;
    font-family: 'Microsoft Yahei','SimHei';
    text-align: center;
    font-size: 14px;
    width:50%;
    cursor: pointer;
}
 
.tab-menu-box3 .menu ul li:hover {
    color: #c9033b;
}
 
.tab-menu-box3 .menu .more {
    float: right;
    font-size: 12px;
    padding-right: 10px;
    font-family: "宋体";
    color: #666;
    text-decoration: none;
}
 
.tab-menu-box3 .menu a:hover {
    color: #f60 !important;
    text-decoration: underline;
    font-weight: bold;
}
 
.tab-menu-box3 .menu .current {
 
    margin-top: -1px;
    color: #c9033b;
    background: #fff;
    height: 33px;
    border-top: 2px solid #c9033b;
    z-index: 10;
    font-weight: bold;
 
}
 
/*公共结束*/
html：
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<!DOCTYPE html>
<html>
<head>
    <meta charset='utf-8' />
    <link rel="stylesheet" type="text/css" href="common1.css" />
</head>
<body>
    <div class='container'>
        <div class='tab-menu-box1'>
            <div class='menu'>
                <ul id='tab-menu-title'>
                    <li class='current' content-to='1'>价格趋势</li>
                    <li content-to='2'>市场分布</li>
                    <li content-to='3'>其他</li>
                </ul>
            </div>
 
            <div id='tab-menu-body' class='content'>
                <div content='1'>content1</div>
                <div content='2' class='hide'>content2</div>
                <div content='3' class='hide'>content3</div>
            </div>
        </div>
    </div>
    <script src="./jquery-2.1.4.js"></script>
    <script type='text/javascript'>
    $(function(){
        ChangeTab('#tab-menu-title', '#tab-menu-body');
    })
    function ChangeTab(title, body) {
            $(title).children().bind("click", function () {
                $menu = $(this);
                $content = $(body).find('div[content="' + $(this).attr("content-to") + '"]');
                $menu.addClass('current').siblings().removeClass('current');
                $content.removeClass('hide').siblings().addClass('hide');
            });
        }
    </script>
</body>
</html>
效果：

​

5、滚动菜单

随鼠标滚动左边的menu跟着变化

demo：
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<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        body{
            margin: 0px;
        }
        img {
            border: 0;
        }
        ul{
            padding: 0;
            margin: 0;
            list-style: none;
        }
        .clearfix:after {
            content: ".";
            display: block;
            height: 0;
            clear: both;
            visibility: hidden;
        }
        .wrap{
             980px;
            margin: 0 auto;
        }
        .pg-header{
            background-color: #303a40;
            -webkit-box-shadow: 0 2px 5px rgba(0,0,0,.2);
            -moz-box-shadow: 0 2px 5px rgba(0,0,0,.2);
            box-shadow: 0 2px 5px rgba(0,0,0,.2);
        }
        .pg-header .logo{
            float: left;
            padding:5px 10px 5px 0px;
        }
        .pg-header .logo img{
            vertical-align: middle;
             110px;
            height: 40px;
 
        }
        .pg-header .nav{
            line-height: 50px;
        }
        .pg-header .nav ul li{
            float: left;
        }
        .pg-header .nav ul li a{
            display: block;
            color: #ccc;
            padding: 0 20px;
            text-decoration: none;
            font-size: 14px;
        }
        .pg-header .nav ul li a:hover{
            color: #fff;
            background-color: #425a66;
        }
        .pg-body{
 
        }
        .pg-body .catalog{
            position: absolute;
            top:60px;
             200px;
            background-color: #fafafa;
            bottom: 0px;
        }
        .pg-body .catalog.fixed{
            position: fixed;
            top:10px;
        }
 
        .pg-body .catalog .catalog-item.active{
            color: #fff;
            background-color: #425a66;
        }
 
        .pg-body .content{
            position: absolute;
            top:60px;
             700px;
            margin-left: 210px;
            background-color: #fafafa;
            overflow: auto;
        }
        .pg-body .content .section{
            height: 500px;
        }
    </style>
</head>
<body>
    <div class="pg-header">
        <div class="wrap clearfix">
            <div class="logo">
                <a href="#">
                    <img src="http://core.pc.lietou-static.com/revs/images/common/logo_7012c4a4.pn">
                </a>
            </div>
            <div class="nav">
                <ul>
                    <li>
                        <a  href="#">首页</a>
                    </li>
                    <li>
                        <a  href="#">功能一</a>
                    </li>
                    <li>
                        <a  href="#">功能二</a>
                    </li>
                </ul>
            </div>
 
        </div>
    </div>
    <div class="pg-body">
        <div class="wrap">
            <div class="catalog">
                <div class="catalog-item" auto-to="function1"><a>第1张</a></div>
                <div class="catalog-item" auto-to="function2"><a>第2张</a></div>
                <div class="catalog-item" auto-to="function3"><a>第3张</a></div>
            </div>
            <div class="content">
                <div menu="function1" class="section">
                    <h1>第一章</h1>
                </div>
                <div menu="function2" class="section">
                    <h1>第二章</h1>
                </div>
                <div menu="function3" class="section">
                    <h1>第三章</h1>
                </div>
            </div>
        </div>
 
    </div>
 
    <script type="text/javascript" src="jquery-2.1.4.js"></script>
    <script type="text/javascript">
        $(function(){
            Init();
        });
        function Init(){
            $(window).scroll(function() {
                var scrollTop = $(window).scrollTop();
                if(scrollTop > 50){
                    $('.catalog').addClass('fixed');
                }else{
                    $('.catalog').removeClass('fixed');
                }
                $('.content').children().each(function(){
                    var offSet = $(this).offset();
                    var offTop = offSet.top - scrollTop;
                    var height = $(this).height();
 
                    if(offTop<=0 && offTop> -height){
                        //去除其他
                        //添加自己
                        var docHeight = $(document).height();
                        var winHeight = $(window).height();
 
                        if(docHeight == winHeight+scrollTop)
                        {
                            $('.catalog').find('div:last-child').addClass('active').siblings().removeClass('active');
                        }else{
                            var target = $(this).attr('menu');
                            $('.catalog').find('div[auto-to="'+target+'"]').addClass('active').siblings().removeClass('active');
                        }
 
 
                    }
                });
 
            });
 
 
        }
 
    </script>
</body>
</html>
效果：


6、登录注册

下载地址：http://files.cnblogs.com/files/wupeiqi/%E7%99%BB%E9%99%86%E6%B3%A8%E5%86%8C.zip

7、更多实例

下载地址：http://files.cnblogs.com/files/wupeiqi/HtmlStore.zip



部分来源：http://www.cnblogs.com/wupeiqi/






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原文地址：https://www.cnblogs.com/daliangtou/p/5201771.html