2017年06月07号课堂笔记

时间：2017-06-07 15:44:51 阅读：212 评论：0 收藏：0 [点我收藏+]

标签：style set 视频 ext class func ant bsp 数字

2017年06月07号晴空气质量：中度污染—>良

内容：jQuery第二节：基本选择器，层次选择器，属性选择器，

基本过滤选择器，可见性过滤选择器

备注：代课老师：李老师

一、基本选择器

1）老师代码：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP ‘index.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
<style type="text/css">
#box {
    background-color: #FFF;
    border: 2px solid #000;
    padding: 5px;
}
</style>
<script type="text/javascript">
    $(document).ready(function() {
        $("#btn1").click(function() {//触发不同的效果按钮点击事件
            //标签选择器，获取<h3>元素并为其添加背景颜色
            //$("h3").css("background","red");
            //类选择器，获取并设置所有class为title的元素的背景颜色
            //$(".title").css("background","red");
            //ID选择器，获取并设置id为box的元素的背景颜色
            //$("#box").css("background","red");
            //并集选择器，获取并设置所有<h2>、<dt>、class为title的元素的背景颜色
            //$("h2,dt,.title").css("background","red");
            //交集选择器，获取并设置所有class为title的<h2>元素的背景颜色
            //$("h2.title").css("background","red");
            //全局选择器，改变所有元素的字体颜色
            $("*").css("color", "red");
        })
    });
</script>
</head>
<body>
    <input type="button" id="btn1" value="显示效果" />
    <div id="box">
        id为box的div
        <h2 class="title">class为title的h2</h2>
        <h3 class="title">class为title的h3</h3>
        <h3>热门排行</h3>
        <dl>
            <dt>
                <img src="images/case_1.gif" width="93" height="99" alt="斗地主" />
            </dt>
            <dd class="title">斗地主</dd>
            <dd>休闲游戏</dd>
            <dd>QQ斗地主是国内同时在线人数最多的棋牌游戏......</dd>
        </dl>
    </div>
</body>
</html>

2）自己代码：

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="js/jquery-1.8.3.js"></script>
    <script type="text/javascript">
        $(function(){
            $("h2").click(function(){
/*                $("ul li").css("font-size","50px");//标签   空格后是后代
                $("#c").css("background","blue");class
                $(".Chinese").css("background","red");*///id
                /*$("h2,div").css("background","yellow");*/ //并集
                $("div.Chinese").css("background","orange");//交集
                $("*").css("color","blue");
            })

        })
    </script>
</head>
<body>
<h2>数字</h2>

<ul>
    <li class="Chinese">考生加油</li>
    <li>two</li>
    <li id="c">three</li>
    <li>four</li>
</ul>
<h2>打招呼</h2>
<ol>
    <li>hello</li>
    <li>hi</li>
    <li >ola</li>
    <li class="Chinese">你好</li>
</ol>
<h2>哪个好看</h2>
<div class="Chinese">海贼王和火影哪个好看？众说纷纭~</div>
<div class="Chinese">科幻和玄幻哪个好看？众说纷纭~</div>
</body>
</html>

二、层次选择器

1）老师代码：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP ‘index.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<style type="text/css">
* {
    margin: 0;
    padding: 0;
    line-height: 30px;
}

body {
    margin: 10px;
}

#menu {
    border: 2px solid #03C;
    padding: 10px;
}

a {
    text-decoration: none;
    margin-right: 5px;
}

span {
    font-weight: bold;
    padding: 3px;
}

h2 {
    margin: 10px 0;
    cursor: pointer;
}
</style>
<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>

<script type="text/javascript">
    $(document).ready(function() {
        $("h2").click(function() {
            //后代选择器，获取并设置#menu下的<span>元素的背景颜色
            //$("#menu span").css("background","red");
            //子选择器，获取并设置#menu下的子元素<span>的背景颜色
            //$("#menu>span").css("background","red");
            //相邻选择器，获取并设置紧接在<h2>元素后的<dl>元素的背景颜色
            //$("h2+dl").css("background","red");
            //同辈选择器，获取并设置<h2>元素之后的所有同辈元素<dl>的背景颜色
            $("h2~dl").css("background","red");
        });
    });
</script>

</head>
<body>
    <div id="menu">
        <h2 title="点击看效果">全部旅游产品分类</h2>
        <dl>
            <dt>
                北京周边旅游<span>特价</span>
            </dt>
            <dd>
                <a href="#">按天数</a> <a href="#">海边旅游</a> <a href="#">草原</a>
            </dd>
        </dl>
        
        <dl>
            <dt>景点门票</dt>
            <dd>
                <a href="#">名胜</a> <a href="#">暑期</a> <a href="#">乐园</a>
            </dd>
            <dd>
                <a href="#">山水</a> <a href="#">双休</a>
            </dd>
        </dl>
        <span>更多分类</span>
    </div>
</body>
</html>

2）自己代码：

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="js/jquery-1.8.3.js"></script>
    <script type="text/javascript">
        $(function(){
            $("h2").click(function(){
/*
                $("ul>li").css("background","yellow");//子代
*/
               // $("h2+div").css("color","blue");//之后紧邻的同辈元素
/*                $("h2~div").css("color","orange");//之后所有同辈元素*/
               // $(".Chinese span").css("color","orange");//所有span后代
                $(".Chinese>span").css("color","orange");//span子代
            })
        })


    </script>

</head>
<body>
<h2>数字</h2>

<ul>
    <li class="Chinese">考生加油</li>
    <li>two</li>
    <li id="c">three</li>
    <li>four</li>
</ul>
<h2>打招呼</h2>
<ol>
    <li>hello</li>
    <li>hi</li>
    <li >ola</li>
    <li class="Chinese">你好</li>
</ol>
<h2>哪个好看</h2>
<div class="Chinese">
    <div><span>孙子</span></div>海贼王和火影哪个好看？</div>
<div class="Chinese"><span>儿子</span>科幻和玄幻哪个好看？</div>
<div class="Chinese">商业片和文艺片哪个好看？</div>
<div>众说纷纭~</div>
</body>
</html>

三、属性选择器

1）老师代码：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP ‘index.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<style type="text/css">
#box {
    background-color: #FFF;
    border: 2px solid #000;
    padding: 5px;
}

h2 {
    cursor: pointer;
}
</style>
<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
<script type="text/javascript">
    $(document).ready(function() {
        $("h2").click(function() {
            //改变含有title属性的<h2>元素的背景颜色
            //$("h2[title]").css("background","red");
            //改变class属性的值为odds的元素的背景颜色
            //$("[class=‘odds‘]").css("background","red");
            //改变id属性的值不为box的元素的背景颜色
            //$("[id!=‘box‘]").css("background","red");
            //改变title属性的值中以h开头的元素的背景颜色
            //$("[title^=‘h‘]").css("background","red");
            //改变title属性的值中以jp结尾的元素的背景颜色
            //$("[title$=‘jp‘]").css("background","red");
            //改变title属性的值中含有s的元素的背景颜色
            //$("[title*=‘s‘]").css("background","red");
            //改变包含class属性，且title属性的值中含有y的<li>元素的背景颜色  
            $("li[class][title*=‘y‘]").css("background","red");
        });
    });
</script>
</head>
<body>
    <div id="box">
        <h2 class="odds" title="cartoonlist">动画列表</h2>
        <ul>
            <li class="odds" title="kn_jp">名侦探柯南</li>
            <li class="evens" title="hy_jp">火影忍者</li>
            <li class="odds" title="ss_jp">死神</li>
            <li class="evens" title="yj_jp">妖精的尾巴</li>
            <li class="odds" title="yh_jp">银魂</li>
            <li class="evens" title="hm_da">黑猫警长</li>
            <li class="odds" title="xl_ds">仙履奇缘</li>
        </ul>
    </div>
</body>
</html>

2）自己代码：

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="js/jquery-1.8.3.js"></script>
    <script type="text/javascript">
        $(function(){
            $("h2").click(function(){
                //$("[href]").css("color","red");//选取含有href属性的元素
                //$("[href=‘#‘]").css("color","green");//选取href属性值为“#”的元素
                //$("[href!=‘#‘]").css("color","yellow");//选取href属性值不为“#”的元素
                //$("[href^=‘en‘]").css("color","orange");//选取href属性值以en开头的元素
                //$("[href$=‘.jpg‘]").css("color","pink");//选取href属性值以.jpg结尾的元素
                //$("[href*=‘s‘]").css("color","purple");//选取href属性值中含有s的元素
                //选取含有id属性和title属性为sayhello的<li>元素
                $("li[id][title=sayhello]").css("background","yellow");



            })
        })
    </script>
</head>
<body>
<h2>属性选择器怎么玩</h2>

<a href="#">我是#字军</a><br/>
<a href="#">我是#字军</a><br/>
<a href="#">我是#字军</a><br/>
<a href="english">hello</a><br/>
<a href="english">brilliant</a><br/>
<a href="images/all.jpg">onepiece</a><br/>
<a href="images/sanji03.jpeg">sanji</a><br/>
<a href="images/sanji05.jpg">juniorsanji</a><br/>
<a href="files/normalWords.txt">normalwords</a><br/>

<ul>
    <li class="Chinese">考生加油</li>
    <li id="b" title="number">two</li>
    <li id="c" title="number">three</li>
    <li id="d" title="number">four</li>
</ul>
<h2>打招呼</h2>
<ol>
    <li title="sayhello">hello</li>
    <li  id="english" title="sayhello">hi</li>
    <li id="spanish" title="sayhello">ola</li>
    <li class="Chinese">你好</li>
</ol>
</body>
</html>

四、基本过滤选择器

1）老师代码：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP ‘index.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
     $("h2").click(function(){
          //改变第1个<li>元素的背景颜色
         // $("li:first").css("background","pink");
          //改变最后一个<li>元素的背景颜色
         // $("li:last").css("background","pink");
          //改变class不为three的<li>元素的背景颜色
           //$("li:not(.three)").css("background","pink");
          //改变索引值为偶数的<li>元素的背景颜色
          // $("li:even").css("background","pink");
          //改变索引值为奇数的<li>元素的背景颜色
           //$("li:odd").css("background","pink");
          //改变索引值等于1的<li>元素的背景颜色
          // $("li:eq(1)").css("background","pink");
          //改变索引值大于1的<li>元素的背景颜色
           //$("li:gt(1)").css("background","pink");
          //改变索引值小于1的<li>元素的背景颜色
          // $("li:lt(1)").css("background","pink");
          //改变所有标题元素，例如<h1>,<h2>,<h3>……这些元素的背景颜色
          // $(":header").css("background","pink");
     });
     
    /*  $("input").click(function(){
       alert($(this).is(":focus")); //判断元素是否获取焦点
      //改变当前获取焦点的元素的背景颜色
       $(":focus").css("background","pink");
     }) */
     $("input").focus(function(){
       $(this).css("background","pink");
     })
});
</script>
</head>
<body>
获取焦点：<input type="text">
<h2>网络小说</h2>
<ul>
  <li>王妃不好当</li>
  <li>致命交易</li>
  <li class="three">迦兰寺</li>
  <li>逆天之宠</li>
  <li>交错时光的爱恋</li>
  <li>张震鬼故事</li>
  <li>第一次亲密接触</li>
</ul>
</body>
</html>

2）自己代码：

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="js/jquery-1.8.3.js"></script>
    <script type="text/javascript">
        $(function(){
            $("h2").click(function(){
                //$("li:first").css("background","#FFB5C5");//选取所有<li>元素中的第一个<li>元素
                //$("li:last").css("background","#CD1076");//选取所有<li>元素中的最后一个<li>元素
                //$("li:even").css("background","#FFB5C5");//选取索引是偶数的所有<li>元素
                //$("li:odd").css("background","#1874CD");//选取索引是奇数的所有<li>元素
                //$("li:eq(2)").css("background","#1874CD");//选取索引等于2的<li>元素
                //$("li:gt(2)").css("background","#FF7256");//选取索引大于2的<li>元素（注：大于1，不包括1）
                //$("li:lt(2)").css("background","#00FF7F");//选取索引小于2的<li>元素（注：小于1，不包括1）
                //$("li:not(.Chinese)").css("background","#DDA0DD");//选取class不是Chinese的元素
                $(":header").css("background","#EE1289")//选取网页中所有标题元素

            })
        })
    </script>
</head>
<body>
<h2>数字</h2>
<ul>
    <li class="Chinese">考生加油</li>
    <li id="b" title="number">two</li>
    <li id="c" title="number">three</li>
    <li id="d" title="number">four</li>
</ul>
<h2>打招呼</h2>
<ol>
    <li title="sayhello">hello</li>
    <li  id="english" title="sayhello">hi</li>
    <li id="spanish" title="sayhello">ola</li>
    <li class="Chinese">你好</li>
</ol>
</body>
</html>

五、可见性过滤选择器

1）老师代码：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP ‘index.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
     $("#show").click(function(){
         $("div:hidden").show();  //让所有隐藏的元素 显示
     });
     $("#hide").click(function(){
         $("div:visible").hide();  //让所有可见的元素 隐藏
     });
});
</script>
</head>
<body>
   <button id="show">show</button>
   <button id="hide">hide</button>
 <div>显示1</div>
 <div>显示2</div>
 <div style="display:none">显示3</div>

</body>
</html>

2）自己代码：

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style type="text/css">
    #txt_show{display: none;color:#0000cc;}
    #txt_hide{display: none;color:#ff3300;}
    #txt_whatever{display: none;color:yellow;}

    </style>
    <script src="js/jquery-1.8.3.js"></script>
    <script type="text/javascript">
        $(function(){
        $("[name=show]").click(function(){
        $("p:hidden").show();//$(":hidden" ) 选取所有隐藏的元素
        })
        $("[name=hide]").click(function(){
            $("p:visible").hide();//$(":visible" )选取所有可见的元素
        })
        })
    </script>
</head>
<body>
<p id="txt_hide">隐藏？</p>
<p id="txt_show">显示？</p>
<p id="txt_whatever">无所谓？</p>
<input type="button" name="show" value="点击显示文字"/>
<input type="button" name="hide" value="点击隐藏文字"/>
</body>
</html>