课程 \
JavaScript进阶篇
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 w= document.documentElement.offsetWidth
|| document.body.offsetWidth;
var h= document.documentElement.offsetHeight
|| document.body.offsetHeight;
</script>
</body>
</html>
2018-01-02
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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 w=document.documentElement.scrollWidth
|| document.body.scrollWidth;
var h=document.documentElement.scrollHeight
|| document.body.scrollHeight;
</script>
</body>
</html>
2018-01-02
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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 w= document.documentElement.clientWidth
|| document.body.clientWidth;
var h= document.documentElement.clientHeight
|| document.body.clientHeight;
document.write("宽："+w+"<br>"+"高："+h)
</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 textNode = document.createTextNode("I love JavaScript");
element.appendChild(textNode);
document.body.appendChild(element);
</script>
</body>
</html>
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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 main = 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
main.appendChild(a)
}
// 调用函数创建链接
createa("http://www.imooc.com/","慕课网")
</script>
</body>
</html>
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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>
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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 node = document.getElementsByTagName("li")[1];
var newnode = document.createElement("li");
newnode.innerHTML = "PHP" ;
otest.insertBefore(newnode,node);
</script>
</body>
</html>
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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 newli = document.createElement('li');
newli.innerHTML = 'PHP'
otest.appendChild(newli)
</script>
</body>
</html>
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9-11 访问兄弟节点
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>nextSibling</title>
</head>
<body>
<ul id="u1">
<li id="a">javascript</li>
<li id="b">jquery</li>
<li id="c">html</li>
</ul>
<ul id="u2">
<li id="d">css3</li>
<li id="e">php</li>
<li id="f">java</li>
</ul>
<script type="text/javascript">
function get_nextSibling(n){
var x=n.nextSibling;
while (x && x.nodeType!=1){
x=x.nextSibling;
}
return x;
}
var x=document.getElementsByTagName("li")[0];
document.write(x.nodeName);
document.write(" = ");
document.write(x.innerHTML);
var y=get_nextSibling(x);
if(y!=null){
document.write("<br />nextsibling: ");
document.write(y.nodeName);
document.write(" = ");
document.write(y.innerHTML);
}else{
document.write("<br>已经是最后一个节点");
}
</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>
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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 x=document.getElementsByTagName("div")[0].childNodes;
for(var i=0;i<x.length;i++)
{
document.write("第"+(i+1)+"个节点的值是："+x[i].nodeValue+"<br />");
document.write("第"+(i+1)+"个节点的名称是："+x[i].nodeName+"<br />");
document.write("第"+(i+1)+"个节点的属性是："+x[i].nodeType+"<br />");
document.write("<br />");
}
</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","WEB前端技术")
document.write(Lists[i].getAttribute("title")+"<br>");
}
}
</script>
</body>
</html>
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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>
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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");
// 任务1
for(var i=0;i<hobby.length;i++)
{
hobby[i].checked = true;
}
}
function clearall(){
var hobby = document.getElementsByName("hobby");
// 任务2
for(var i=0;i<hobby.length;i++)
{
hobby[i].checked = false;
}
}
function checkone(){
var j=document.getElementById("wb").value;
// 任务3
var hobby = document.getElementById("hobby"+j);
hobby.checked = true;
}
</script>
</body>
</html>
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8-12 Navigator对象
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<script type="text/javascript">
</script>
<body>
</body>
</html>
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8-11 Location对象
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>location</title>
</head>
<script type="text/javascript">
</script>
<body>
</body>
</html>
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8-10 返回浏览历史中的其他页面
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<script type="text/javascript">
function GoBack() {
}
function GoForward() {
}
</script>
<body>
点击下面的锚点链接，添加历史列表项:
<br />
<a href="#target1">第一个锚点</a>
<a name="target1"></a>
<br />
<a href="#target2">第二个锚点</a>
<a name="target2"></a>
<br /><br />
使用下面按钮，实现返回前或下一个页面:
<form>
<input type="button" value="返回前一个页面" onclick="GoBack();" />
<input type="button" value="返回下一个页面" onclick="GoForward();" />
</form>
</body>
</html>
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8-8 返回前一个浏览的页面
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
<script type="text/javascript">
function GoBack() {
window.history.back();
}
</script>
</head>
<body>
点击下面的锚点链接，添加历史列表项:
<br />
<a href="#target1">第一个锚点</a>
<a name="target1"></a>
<br />
<a href="#target2">第二个锚点</a>
<a name="target2"></a>
<br /><br />
使用下面按钮，实现返回前一个页面:
<form>
<input type="button" value="返回前一个页面" onclick="GoBack();" />
</form>
</body>
</html>
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