更改一个链接的文本、URL 及target
<html>
<head>
<script type="text/javascript">
function changeLink(){
document.getElementById('myAnchor').innerHTML="访问我的主页";
document.getElementById('myAnchor').href="http://www.jianshu.com/users/6183038717af/timeline";
document.getElementById('myAnchor').target="_blank";
}
</script>
</head>
<body>
<a id="myAnchor" href="http://www.microsoft.com">访问 Microsoft</a>
<input type="button" onclick="changeLink()" value="改变链接">
<p>在本例中，我们改变超链接的文本和 URL。我们也改变 target 属性。target 属性的默认设置是 "_self"，这意味着会在相同的窗口中打开链接。通过把 target 属性设置为 "_blank"，链接将在新窗口中打开。</p>
</body>
</html>
输出流
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>输出流</title>
</head>
<body>
<script type="text/javascript">
document.write("<h1>test</h1>")
document.write("write输出流可以包含html");
</script>
</body>
</html>
document获取属性
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>get document attribute</title>
</head>
<body>
<script type="text/javascript">
//获取标题
document.write("title="+document.title+"<br>");
//获取url
document.write("URL=="+document.URL+"<br>");
//获取反链
document.write("referrer=="+document.referrer+"<br>");
//获取domain标签(根域名)
document.write("domain=="+document.domain+"<br>");
</script>
</body>
</html>
getElementById,getElementsByName
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>test</title>
<script type="text/javascript">
function getValue(){
alert(document.getElementById("clickEnable").innerHTML)
}
function sumOfInput(){
alert(document.getElementsByName("input1").length)
}
</script>
</head>
<body>
<!--dom获取id需要是唯一的-->
<h1 id="clickEnable" onclick="getValue()">click this</h1>
<input name="input1" type="text" placeholder="you guess num"/><br>
<input name="input1" type="text" placeholder="you guess num"/><br>
<input name="input1" type="text" placeholder="you guess num"/><br>
<input type="button" onclick="sumOfInput()" value="guess num"/>
</body>
</html>
atuo clock
<html>
<head>
<script type="text/javascript">
function startTime()
{
var today=new Date()
var h=today.getHours()
var m=today.getMinutes()
var s=today.getSeconds()
// add a zero in front of numbers<10
m=checkTime(m)
s=checkTime(s)
document.getElementById('txt').innerHTML=h+":"+m+":"+s
t=setTimeout('startTime()',500)
}
function checkTime(i)
{
if (i<10)
{i="0" + i}
return i
}
function timedMsg()
{
//params1: code params2:
//setTimeout() 只执行 code 一次
//如果要多次调用，请使用 setInterval() 或者让 code 再次调用 setTimeout()。
var t=setTimeout("alert('3 seconds!')",3000)
}
</script>
</head>
<body onload="startTime()">
<div id="txt"></div><br>
<input type="button" value="3 seconds Display timed alertbox!"
onClick="timedMsg()">
</body>
</html>
