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课程 \ JavaScript进阶篇

JavaScript进阶篇

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10-1 编程挑战
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>实践题 - 选项卡</title>
<style type="text/css">
/* CSS样式制作 */
*{margin:0;padding:0;font:normal 12px "微软雅黑";color:#000000;}
ul{list-style-type: none;}
a{text-decoration: none;}

#tab-list{width: 275px;height:190px;margin: 20px auto;}

#ul1{border-bottom: 2px solid #8B4513;height: 32px;}
#ul1 li{display: inline-block;width: 60px;line-height: 30px;text-align: center;border: 1px solid #999;border-bottom: none;margin-left: 5px;}
#ul1 li:hover{cursor: pointer;}
#ul1 li.active{border-top:2px solid #8B4513;border-bottom:2px solid #FFFFFF;}

#tab-list div{border: 1px solid #7396B8;border-top: none;}
#tab-list div li{height: 30px;line-height: 30px;text-indent: 8px;}

.show{display: block;}.hide{display: none;}
</style>
<script type="text/javascript">

window.onload = function() {
var oUl1 = document.getElementById("ul1");
var aLi = oUl1.getElementsByTagName("li");
var oDiv = document.getElementById("tab-list");
var aDiv = oDiv.getElementsByTagName("div");
for(var i = 0; i < aLi.length; i++) {
aLi[i].index = i;
aLi[i].onmouseover = function() {
for(var i = 0; i < aLi.length; i++) {
aLi[i].className = "";
}
this.className = "active";
for(var j = 0; j < aDiv.length; j++) {
aDiv[j].className = "hide";
}
aDiv[this.index].className = "show";
}
}
}


</script>

</head>
<body>
<!-- HTML页面布局 -->
<div id="tab-list">
<ul id="ul1">
<li class="active">房产</li><li>家居</li><li>二手房</li>
</ul>
<div>
<ul>
<li><a href="javascript:;">275万购昌平邻铁三居 总价20万买一居</a></li>
<li><a href="javascript:;">200万内购五环三居 140万安家东三环</a></li>
<li><a href="javascript:;">北京首现零首付楼盘 53万购东5环50平</a></li>
<li><a href="javascript:;">京楼盘直降5000 中信府 公园楼王现房</a></li>
</ul>
</div>
<div class="hide">
<ul>
<li><a href="javascript:;">40平出租屋大改造 美少女的混搭小窝</a></li>
<li><a href="javascript:;">经典清新简欧爱家 90平老房焕发新生</a></li>
<li><a href="javascript:;">新中式的酷色温情 66平撞色活泼家居</a></li>
<li><a href="javascript:;">瓷砖就像选好老婆 卫生间烟道的设计</a></li>
</ul>
</div>
<div class="hide">
<ul>
<li><a href="javascript:;">通州豪华3居260万 二环稀缺2居250w甩</a></li>
<li><a href="javascript:;">西3环通透2居290万 130万2居限量抢购</a></li>
<li><a href="javascript:;">黄城根小学学区仅260万 121平70万抛!</a></li>
<li><a href="javascript:;">独家别墅280万 苏州桥2居优惠价248万</a></li>
</ul>
</div>
</div>


</body>
</html>
2018-02-10 查看完整代码
9-21 网页卷去的距离与偏移量
<!DOCTYPE HTML>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<script type="text/javascript">
function req(){
var div = document.getElementById("div1");
document.getElementById("li1").innerHTML = (div.offsetTop)+"px";//div1距离屏幕顶部的距离
document.getElementById("li2").innerHTML = (div.offsetLeft)+"px";//div1距离屏幕左部的距离
document.getElementById("li3").innerHTML = (div.scrollTop)+"px";//div1纵向滚动条滚动的距离
document.getElementById("li4").innerHTML = (div.scrollLeft)+"px";//div1横向滚动条滚动的距离
}
</script>
</head>
<body style="border:10px solid #ccc;padding:0px 0px;margin:5px 10px">
<div style="width:60%;border-right:1px dashed red;float:left;">
<div style="float:left;">
<div id="div1" style="border:5px red solid;height:300px;width:200px;overflow:auto">
<div style="height:500px;width:400px">请调整横竖滚动条后，点击按钮后查看offsetTop、offsetLeft、scrollTop、scrollLeft值。</div>
</div>
<input type="button" value="点击我!" onclick="req()" style="border: 1px solid purple;height: 25px;"/>
</div>

</div>
<div style="width:30%;float:left;">
<ul style="list-style-type: none; line-height:30px;">结果：
<li>offsetTop : <span id="li1"></span></li>
<li>offsetLeft : <span id="li2"></span></li>
<li> scrollTop : <span id="li3"></span></li>
<li>scrollLeft : <span id="li4"></span></li>
</ul>

</div>
<div style="clear:both;"></div>
</body>
</html>
2018-02-10 查看完整代码
9-20 网页尺寸offsetHeight
<!DOCTYPE HTML>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<script type="text/javascript">
var i=document.documentElement.offsetHeight;
document.write(i);
</script>
</body>
</html>
2018-02-10 查看完整代码
9-19 网页尺寸scrollHeight
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

</head>
<body>
<script type="text/javascript">
var i=document.documentElement.scrollHeight;
document.write(i);
</script>
</body>
</html>
2018-02-10 查看完整代码
9-18 浏览器窗口可视区域大小
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<script type="text/javascript">
var i=document.documentElement.clientWidth;
document.write(i);
</script>
</body>
</html>
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9-17 创建文本节点createTextNode
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
<style type="text/css">

.message{
width:200px;
height:100px;
background-color:#CCC;}

</style>
</head>
<body>
<script type="text/javascript">
var element=document.createElement("p");
element.className="message";
var newnode=document.createTextNode("I love Javascript!");
document.body.appendChild(element);
element.appendChild(newnode)
</script>

</body>
</html>
2018-02-10 查看完整代码
9-16 创建元素节点createElement
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>
<script type="text/javascript">
var body= document.body;
//创建链接
function createa(url,text)
{
var a = document.createElement("a");
a.href = url;
a.innerHTML = text;
a.style.color = "red";
body.appendChild(a);
}
// 调用函数创建链接
createa("http://www.baidu.com/","百度");
</script>
</body>
</html>
2018-02-10 查看完整代码
9-15 替换元素节点replaceChild()
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>


<div><b id="oldnode">JavaScript</b>是一个很常用的技术，为网页添加动态效果。</div>
<a href="javascript:replaceMessage()"> 将加粗改为斜体</a>

<script type="text/javascript">
function replaceMessage(){
var oldnode=document.getElementById("oldnode");
var oldHTML= oldnode.innerHTML;
var newnode=document.createElement("i");
oldnode.parentNode.replaceChild(newnode,oldnode);
newnode.innerHTML=oldHTML;
}
</script>

</body>
</html>
2018-02-10 查看完整代码
9-14 删除节点removeChild()
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>

<body>
<div id="content">
<h1>html</h1>
<h1>php</h1>
<h1>javascript</h1>
<h1>jquery</h1>
<h1>java</h1>
</div>

<script type="text/javascript">
function clearText() {
var content=document.getElementById("content");
// 在此完成该函数
for(var i=content.childNodes.length-1;i>=0;i--){
var childNode = content.childNodes[i];
content.removeChild(childNode);
}

}
</script>

<button onclick="clearText()">清除节点内容</button>



</body>
</html>
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9-13 插入节点insertBefore()
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>

<ul id="test"><li>JavaScript</li><li>HTML</li></ul>

<script type="text/javascript">

var otest = document.getElementById("test");
var newnode = document.createElement("li");
newnode.innerHTML = "PHP" ;
otest.insertBefore(newnode,otest.childNodes[1]);




</script>

</body>
</html>
2018-02-10 查看完整代码
9-12 插入节点appendChild()
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>

<ul id="test">
<li>JavaScript</li>
<li>HTML</li>
</ul>

<script type="text/javascript">

var otest = document.getElementById("test");
var nodename=document.createElement("li");
nodename.innerHTML="php";
otest.appendChild(nodename);

</script>

</body>
</html>
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9-10 访问父节点parentNode
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>
<ul id="con">
<li id="lesson1">javascript
<ul>
<li id="tcon"> 基础语法</li>
<li>流程控制语句</li>
<li>函数</li>
<li>事件</li>
<li>DOM</li>
</ul>
</li>
<li id="lesson2">das</li>
<li id="lesson3">dadf</li>
<li id="lesson4">HTML/CSS
<ul>
<li>文字</li>
<li>段落</li>
<li>表单</li>
<li>表格</li>
</ul>
</li></ul>
<script type="text/javascript">
var mylist = document.getElementById("tcon");
document.write(mylist.parentNode.parentNode.parentNode.lastChild.innerHTML);
</script>

</body>
</html>
2018-02-10 查看完整代码
9-9 访问子节点的第一和最后项
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>
<div id="con">
<p>javascript</p>
<div>jQuery</div>
<h5>PHP</h5>
</div>
<script type="text/javascript">
var x=document.getElementById("con");
document.write(x.firstChild.nodeName+" "+x.firstChild.nodeValue+" "+x.firstChild.nodeType+"<br />");
document.write(x.lastChild.nodeName+" "+x.lastChild.nodeValue+" "+x.lastChild.nodeType+"<br />");
</script>
</body>
</html>
2018-02-10 查看完整代码
9-8 访问子节点childNodes
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>
<div>
javascript
<p>javascript</p>
<div>jQuery</div>
<h5>PHP</h5>
</div>
<script type="text/javascript">
var cpa=document.getElementsByTagName("div")[0].childNodes;
for(var i=0;i<cpa.length;i++){
document.write("UL子节点个数："+cpa.length+"<br />");
document.write("节点类型："+cpa[0].nodeTpye);
}


</script>
</body>
</html>
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9-6 setAttribute()方法
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>
<p id="intro">我的课程</p>
<ul>
<li title="JS">JavaScript</li>
<li title="JQ">JQuery</li>
<li title="">HTML/CSS</li>
<li title="JAVA">JAVA</li>
<li title="">PHP</li>
</ul>
<h1>以下为li列表title的值,当title为空时，新设置值为"WEB前端技术":</h1>
<script type="text/javascript">
var Lists=document.getElementsByTagName("li");
for (var i=0; i<Lists.length;i++)
{
var text=Lists[i].getAttribute("title");
document.write(text +"<br>");
if(text=="")
{
Lists[i].setAttribute("title","好好学习，天天向上")
document.write(Lists[i].getAttribute("title")+"<br>");
}
}
</script>
</body>
</html>
2018-02-10 查看完整代码
9-5 getAttribute()方法
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>getAttribute()</title>
</head>
<body>
<p id="intro">课程列表</p>
<ul>
<li title="第1个li">HTML</li>
<li>CSS</li>
<li title="第3个li">JavaScript</li>
<li title="第4个li">Jquery</li>
<li>Html5</li>
</ul>
<p>以下为获取的不为空的li标签title值:</p>
<script type="text/javascript">
var con=document.getElementsByTagName("li");
for (var i=0; i< con.length;i++){
var text=con[i].getAttribute("title");
if(text!=null)
{
document.write(text+"<br>");
}
}
</script>
</body>
</html>
2018-02-10 查看完整代码
9-4 区别getElementByID,getElementsByName,getElementsByTagName
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>

<body>
<form>
请选择你爱好:<br>
<input type="checkbox" name="hobby" id="hobby1"> 音乐
<input type="checkbox" name="hobby" id="hobby2"> 登山
<input type="checkbox" name="hobby" id="hobby3"> 游泳
<input type="checkbox" name="hobby" id="hobby4"> 阅读
<input type="checkbox" name="hobby" id="hobby5"> 打球
<input type="checkbox" name="hobby" id="hobby6"> 跑步 <br>
<input type="button" value = "全选" onclick = "checkall();">
<input type="button" value = "全不选" onclick = "clearall();">
<p>请输入您要选择爱好的序号，序号为1-6:</p>
<input id="wb" name="wb" type="text" >
<input name="ok" type="button" value="确定" onclick = "checkone();">
</form>
<script type="text/javascript">
function checkall(){
var hobby = document.getElementsByTagName("input");
for(var i=0;i<hobby.length;i++){
hobby[i].checked=true;
}
// 任务1

}
function clearall(){
var hobby = document.getElementsByName("hobby");
for(var i=0;i<hobby.length;i++){
hobby[i].checked=false;
}
// 任务2

}

function checkone(){
var j=document.getElementById("wb").value;
var hobby = document.getElementById("hobby"+j);
hobby.checked = true;
// 任务3

}

</script>
</body>
</html>
2018-02-10 查看完整代码
9-3 getElementsByTagName()方法
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>JavaScript</title>
</head>
<body>

<form name="Input">
<table align="center" width="500px" height="50%" border="1">
<tr>
<td align="center" width="100px">
学号:
</td>
<td align="center" width="300px">
<input type="text" id=userid name="user" onblur="validate();">
<div id=usermsg></div>
</td>
</tr>
<tr>
<td align="center" width="100px">
姓名:
</td>
<td align="center">
<input type="text" name="name">
</td>
</tr>
<tr>
<td align="center" width="%45">
性别:
</td>
<td align="center">
<input type="radio" name="sex" value="男">
男
<input type="radio" name="sex" value="女">
女
</td>
</tr>
<tr>
<td align="center" width="30%">
年龄:
</td>
<td align="center" width="300px">
<input type="text" name="age">
</td>
</tr>
<tr>
<td align="center" width="100px">
地址:
</td>
<td align="center" width="300px">
<input type="text" name="addr">
</td>
</tr>

</table>
</form>
<h1 id="myHead" onclick="getValue()">
看看三种获取节点的方法?
</h1>
<p>
点击标题弹出它的值。
</p>
<input type="button" onclick="getElements()"
value="看看name为sex的节点有几个?" />
<Br>
<input type="button" onclick="getTagElements()"
value="看看标签名为input的节点有几个?" />

<script type="text/javascript">
function getValue()
{
var myH=document.getElementById("myHead");
alert(myH.innerHTML)
}
function getElements()
{
var myS=document.getElementsByName("sex");
alert(myS.length);
}

function getTagElements()
{
var myI=document.getElementsByTagName("input");
alert(myI.length);
}

</script>

</body>
</html>
2018-02-10 查看完整代码
9-2 getElementsByName()方法
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript">
function getnum(){
var mynode=document.getElementsByName("myt");
alert(mynode.length);
}
</script>
</head>
<body>
<input name="myt" type="text" value="1">
<input name="myt" type="text" value="2">
<input name="myt" type="text" value="3">
<input name="myt" type="text" value="4">
<input name="myt" type="text" value="5">
<input name="myt" type="text" value="6">

<br />
<input type="button" onclick="getnum()" value="看看有几项？" />
</body>
</html>
2018-02-10 查看完整代码
9-1 认识DOM
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>style样式</title>
</head>
<body>
<h2 id="con">I love JavaScript</H2>
<p> JavaScript使网页显示动态效果并实现与用户交互功能。</p>
<script type="text/javascript">
var idcon=document.getElementById("con");
idcon.style.color="red";
idcon.style.backgroundColor="#CCC";
idcon.style.display="none";
</script>
</body>
</html>
2018-02-10 查看完整代码
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