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  • day17 jQuery

    1.html+css补充

             - 页面布局:前台布局;后台布局

             - float清除

    第一种清除方法:(简单粗暴)

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <div style="background-color: green;">
            <div style="  200px;height: 200px;border: 1px solid red;float: left;"></div>
            <div style="  200px;height: 200px;border: 1px solid red;float: left;"></div>
            <div style="  200px;height: 200px;border: 1px solid red;float: left;"></div>
            <div style="  200px;height: 200px;border: 1px solid red;float: left;"></div>
            <div style="  200px;height: 200px;border: 1px solid red;float: left;"></div>
            <div style="clear: both"></div>
        </div>
    </body>
    </html>

    第二种方法:文艺

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <style>
            .clearfix:after{
                content: '......';
                display: block;
                clear: both;
                visibility: hidden;
                height:0;
                /*display: none;*/
            }
        </style>
    </head>
    <body>
        <div class="clearfix" style="background-color: #009933">
            <div style=" 200px;height: 200px;border: 1px solid red;float: left;">test1</div>
            <div style=" 200px;height: 200px;border: 1px solid red;float: left;">test1</div>
            <div style=" 200px;height: 200px;border: 1px solid red;float: left;">test1</div>
            <div style=" 200px;height: 200px;border: 1px solid red;float: left;">test1</div>
    
        </div>
    </body>
    </html>

    第三种方法:清新引入

    common.css文件:

    .clearfix:after{
        content: '.';
        display: block;
        clear: both;
        visibility: hidden;
        height:0;
    }

    html文件:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <link rel="stylesheet" href="common.css">
    </head>
    <body>
        <div style="background-color: #009933" class="clearfix">
            <div style="height: 200px; 200px;border: 1px solid red;float: left;"></div>
            <div style="height: 200px; 200px;border: 1px solid red;float: left;"></div>
            <div style="height: 200px; 200px;border: 1px solid red;float: left;"></div>
            <div style="height: 200px; 200px;border: 1px solid red;float: left;"></div>
        </div>
    </body>
    </html>

                  -响应式布局的两种方法:

    第一种方法:简单粗暴的直接定宽

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <style>
            .item{
                width:25%;
                float: left;
                
            }
        </style>
    </head>
    <body>
        <div style=" 800px">
            <div class="item">
                <label>用户名:</label>
                <input type="text"/>
            </div>
            <div class="item">
                <label>用户名:</label>
                <input type="text"/>
            </div>
            <div class="item">
                <label>用户名:</label>
                <input type="text"/>
            </div>
            <div class="item">
                <label>用户名:</label>
                <input type="text"/>
            </div>
            <div class="item">
                <label>用户名:</label>
                <input type="text"/>
            </div>
            <div class="item">
                <label>用户名:</label>
                <input type="text"/>
            </div>
            <div class="item">
                <label>用户名:</label>
                <input type="text"/>
            </div>
        </div>
    </body>
    </html>

    第二种方式:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <style>
            @media (max-800px) {
                .item{
                    width: 300px;
                    float: left;
                }
            }
             @media (min-700px) {
                .item{
                    width: 300px;
                    float: left;
                }
            }
        </style>
    </head>
    <body>
        <div class="item">
            <label>用户名:</label>
            <input type="text">
        </div>
        <div class="item">
            <label>用户名:</label>
            <input type="text">
        </div>
        <div class="item">
            <label>用户名:</label>
            <input type="text">
        </div>
        <div class="item">
            <label>用户名:</label>
            <input type="text">
        </div>
        <div class="item">
            <label>用户名:</label>
            <input type="text">
        </div>
        <div class="item">
            <label>用户名:</label>
            <input type="text">
        </div>
        <div class="item">
            <label>用户名:</label>
            <input type="text">
        </div>
        <div class="item">
            <label>用户名:</label>
            <input type="text">
        </div>
        <div class="item">
            <label>用户名:</label>
            <input type="text">
        </div>
    </body>
    </html>

    2.dom事件:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
         <a href="http://www.caifupad.com" onclick="return func()">萌萌哒</a>
         <script>
             function func(){
                 alert('萌萌哒')
                 return false
             }
         </script>
    
    </body>
    </html>

    用户提交实例(空字符不提交后台)

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <form action="http://www.baidu.com">
            <input type="text" id="user" name="user">
            <input type="submit" id="sb" value="提交">
        </form>
        <script>
            document.getElementById('sb').onclick = function(){
                var v = document.getElementById('user').value
                if(v.length>0){
                    return true
                }else{
                    alert('请输入用户名')
                    return false
                }
            }
        </script>
    </body>
    </html>

    第二种方法:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <form action="http://www.baidu.com">
            <input type="text" id="'user" name="user"/>
            <input type="submit" value="提交" onclick="return func()">
        </form>
        <script>
            function func(){
                var v = document.getElementById('user').value;
                if(v.length>0){
                    return true
                }else{
                    alert("请输入内容!!")
                    return false
                }
            }
        </script>
    </body>
    </html>

    如何绑定事件,如何阻止绑定事件都有两种方法如上述所示;

    this介绍:表示当前触发事件的标签

                  一个标签可以绑定多个不同的事件

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <!--第一种方式-->
        <!--<div id="i1" onclick="func(this)">sss</div>-->
        <!--<script>-->
            <!--function func(ths){-->
                <!--var v = ths.innerHTML-->
                <!--alert(v)-->
            <!--}-->
        <!--</script>-->
        <!--第二种方式-->
        <div id="i1">sss</div>
        <script>
            document.getElementById('i1').onclick = function(){
    //            var v = document.getElementById('i1').innerHTML
                var v=this.innerHTML
                alert(v)
            }
        </script>
    </body>
    </html>

    实例:获取焦点和失去焦点

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <input type="text" value="请输入关键字" onfocus="func(this);" onblur="bfunc(this);"/>
        <input type="button" value="提交">
        <script>
            <!--获取焦点-->
            function func(ths){
                var v = ths.value;
                if(v == "请输入关键字"){
                    ths.value  = ""
                }
            }
    //        失去焦点
            function bfunc(ths){
                var b = ths.innerText
                if(b.length == 0){
                    ths.value = "请输入关键字"
                }
            }
        </script>
    </body>
    </html>

    .value:表单信息的获取

    innerText:只获取文本信息

    innerHtml:获取到标签和文本信息

    同一个标签绑定相同的事件

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
         <div id='i1' onclick="console.log(1)">jjj</div>
         <script>
             document.getElementById('i1').addEventListener('click',function(){
                 console.log(2)
             })
         </script>
    
    </body>
    </html>

    事件冒泡:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <div style="height: 400px; 400px;background-color: red" onclick="alert(1)">
            <div style="height: 300px; 300px;background-color: #009933" onclick="alert(2)">
                <div style="height: 200px; 200px;background-color: #3300cc" onclick="alert(3)"></div>
            </div>
        </div>
    </body>
    </html>

    事件捕获:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <div id='i1' style="height: 400px; 400px;background-color: red">
            <div id="i2" style="height: 300px; 300px;background-color: #009933">
                <div id="i3" style="height: 200px; 200px;background-color: #3300cc"></div>
            </div>
        </div>
        <script>
            document.getElementById('i1').addEventListener('click',function(){alert(1)},true)
            document.getElementById('i2').addEventListener('click',function(){alert(2)},true)
            document.getElementById('i3').addEventListener('click',function(){alert(3)},true)
        </script>
    </body>
    </html>

    windows事件

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <input type="text" onkeydown="func(this,event);">
    
        <script>
            function func(ths,e) {
                console.log(ths,e)
            }
            window.onkeydown = function(e){
    //            console.log(e)
                alert(e)
            }
        </script>
    </body>
    </html>

    任何标签通过js提交表单

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <form id="f1" action="http://www.baidu.com">
            <input type="submit" value="提交">
            <a onclick="submitForm();">提交</a>
        </form>
        <script>
            function submitForm(){
                document.getElementById('f1').submmit()
            }
        </script>
    </body>
    </html>

    js补充:

    刷新页面: window.location.reload

    获取页面:window.location.href

    页面赋值跳转:window.location.href = “http://www.baidu.com”

    3.jQuery

    highchart+jQuery画图:

    jQuery的功能:

    - 查找

          -选择器

            $(‘#i1’): 查找id=i1的标签

            $(‘.i1’):查找class=i1的标签

            $(‘div’):查找所有的div标签

            $(‘*’):查找所搜的标签

            $(‘#i1 .c1 div’):先找id=i1的标签,然后在其子子孙孙中继续查找

            - 属性选择器

            $(‘input[type=”text”]’) ----> $(‘:text’)

          - 筛选器:

             $(‘#i1’).parent()

             $(‘#i1’).children()

             $(‘#i1’).next()

             $(‘#i1’).prev()

             $(‘#i1’).siblings()

             $(‘#i1’).find(‘.c1’)

           筛选器还支持链式编程:

              $(‘#i1’).next().prev().find(‘c1’).parent()   #实例

    - 操作

            addClass()

            removeClass()

            val():针对input或者textarea的查找和设置值

            text():针对文本获取和设置值

            html():针对文本获取和设置值

            attr():对属性设置新值

            prop():设置属性值checkbox的勾选

    窗口切换的小例子:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <style>
            .hide{
                display: none;
            }
            .menus{
                height: 48px;
                background-color: lightgrey;
                line-height: 48px;
            }
            .menus a{
                display: inline-block;
                border:1px solid #3A3A4F;
                padding: 0 10px;
                margin-top: -4px;
            }
            .menus a.active{
                border-top:4px solid cadetblue;
            }
        </style>
    </head>
    <body>
        <div style=" 500px;border: 1px solid lightgrey;min-height: 500px">
            <div class="menus">
                <a class="active" target="i1">菜单一</a>
                <a target="i2">菜单二</a>
                <a target="i3">菜单三</a>
            </div>
            <div class="contents">
                <div nid="i1" class="content">内容一</div>
                <div nid="i2" class="content hide">内容二</div>
                <div nid="i3" class="content hide">内容三</div>
            </div>
        </div>
        <script src="jquery-1.12.4.js"></script>
        <script>
            //为所有的a标签绑定时间
            $('.menus a').click(function(){
                //this是DOM的事件
                $(this).addClass('active').siblings().removeClass('active')
                var v = $(this).attr('target')   //获取i1 i2 i3
                var t = 'div[nid="' + v +'"]'   //div[nid=i1]
                $('.contents').find(t).removeClass('hide').siblings().addClass('hide')
            })
        </script>
    </body>
    </html>

    全选,反选实例:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <a onclick="checkAll()">全选</a>
        <a onclick="cancelAll()">取消</a>
        <a onclick="reverseAll()">反选</a>
        <table border="1px">
                    <tr>
                        <td><input type="checkbox"></td>
                        <td target="id">1</td>
                        <td target="host">c1.com</td>
                        <td target="port">80</td>
                        <td><a onclick="editAsset(this)">编辑</a>|<a>删除</a></td>
                        <td>查看更多</td>
                    </tr>
                    <tr>
                        <td><input type="checkbox"></td>
                        <td target="id">1</td>
                        <td target="host">c1.com</td>
                        <td target="port">80</td>
                        <td><a onclick="editAsset(this)">编辑</a>|<a>删除</a></td>
                        <td>查看更多</td>
                    </tr>
                    <tr>
                        <td><input type="checkbox"></td>
                        <td target="id">2</td>
                        <td target="host">c2.com</td>
                        <td target="port">80</td>
                        <td><a onclick="editAsset(this)">编辑</a>|<a>删除</a></td>
                        <td>查看更多</td>
                    </tr>
                    <tr>
                        <td><input type="checkbox"></td>
                        <td target="id">3</td>
                        <td target="host">c3.com</td>
                        <td target="port">80</td>
                        <td><a onclick="editAsset(this)">编辑</a>|<a>删除</a></td>
                        <td>查看更多</td>
                    </tr>
                    <tr>
                        <td><input type="checkbox"></td>
                        <td target="id">4</td>
                        <td target="host">c4.com</td>
                        <td target="port">80</td>
                        <td><a onclick="editAsset(this)">编辑</a>|<a>删除</a></td>
                        <td>查看更多</td>
                    </tr>
                    <tr>
                        <td><input type="checkbox"></td>
                        <td target="id">5</td>
                        <td target="host">c5.com</td>
                        <td target="port">80</td>
                        <td><a onclick="editAsset(this)">编辑</a>|<a>删除</a></td>
                        <td>查看更多</td>
                    </tr>
                </table>
        <script src="jquery-1.12.4.js"></script>
        <script>
            function checkAll(){
                $('table :checkbox').prop('checked',true)
            }
            function cancelAll(){
                $('table :checkbox').prop('checked',false)
            }
            function reverseAll(){
               $('table :checkbox').each(function(){
                   if($(this).prop('checked')){
                       $(this).prop('checked',false)
                   }else{
                        $(this).prop('checked',true)
                   }
               })
            }
        </script>
    </body>
    </html>

    开关灯小例子:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <style>
            .hide{
                display: none;
            }
        </style>
    </head>
    <body>
        <a onclick="light()">开关灯</a>
        <div id='i2'style=" 400px; height: 400px; background-color:black">ddsdsads</div>
    </body>
        <script src="jquery-1.12.4.js"></script>
        <script>
            function light(){
                 $('#i2').toggleClass('hide')
            }
        </script>
    </html>

    css参数:

         $(‘#i1’).css(‘color’,’red’)

    位置参数:

    $(‘.i1’).position():获取位置信息

    $(‘#i1’).offset():相对定位

    $(window).scrollTop(0):返回顶部

    返回顶部小例子:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <style>
            body{
                margin:0;
            }
        </style>
    </head>
    <body>
    <div style="height: 900px;">fff</div>
    <div id="i1">dadsak</div>
    <div onclick="goTop()" style="height:50px; 50px;position: fixed; right: 10px;bottom: 10px;">返回顶部</div>
    <script src="jquery-1.12.4.js"></script>
    <script>
        function goTop(){
            $(window).scrollTop(0)
        }
    </script>
    </body>
    </html>

    文档操作:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <input type="text" id="inp"/><a onclick="addValue()">添加</a>
        <ul id="ul">
            <li>内容一</li>
        </ul>
        <script src="jquery-1.12.4.js"></script>
        <script>
            function addValue(){
               var v = $('#inp').val();
                var tag = document.createElement('li');
                tag.innerHTML = v;
                $('#ul').append(tag);  //同级追加
    //            $('ul')prepend(tag);   //往上添加
    //            $('ul').after(tag);    //往后添加
                $(tag).empty()         //晴空标签的内容
                $(tag).remove()       //移除标签
            }
        </script>
    </body>
    </html>

    点赞实例:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <style>
            .item{
                height: 80px;
                line-height: 80px;
                border:1px solid red;
            }
            .item .zan{
                position: relative;
            }
            .item .zan .i{
                position: absolute;
            }
        </style>
    </head>
    <body>
        <div class="item">
            <div class="zan">
                <span></span>
            </div>
        </div >
         <div class="item">
            <div class="zan">
                <span></span>
            </div>
        </div>
         <div class="item">
            <div class="zan">
                <span></span>
            </div>
        </div>
         <div class="item">
            <div class="zan">
                <span></span>
            </div>
        </div>
        <script src="jquery-1.12.4.js"></script>
        <script>
            $('.item span').click(function(){
                var fontSize = 12;
                var top = -1;
                var left = 20;
                var opacity = 1;
                var tag = document.createElement('i');
                tag.innerHTML = "+1";
                $(this).after(tag)
               var obj = setInterval(function(){
                    //创建定时器
                    fontSize += 10;
                    top -= 5;
                    left += 5;
                    opacity -= 0.2;
                    tag.style.fontSize = fontSize + 'px';
                    tag.style.top = top + 'px';
                    tag.style.left = left + 'px';
                    tag.style.opacity = opacity;
                    if(opacity < 0){
                        //关闭定时器
                        clearInterval(obj)
                    }
                },90)
            })
        </script>
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/wanghui1991/p/6479818.html
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