<head>
<script type="text/javascript">
function setSrc()
{
var x=document.images
x[0].src="http://www.webjx.com/htmldata/sort/hackanm.gif"
}
</script>
</head>
<body>
<img src="http://www.webjx.com/htmldata/sort/compman.gif" width="107" height="98" />
<form>
<input type="button" onclick="setSrc()" value="Change image">
</form>
</body>
</html>
改变图象的宽度
<html>
<head>
<script type="text/javascript">
function setWidth()
{
var x=document.images
x[0].width="300"
}
</script>
</head>
<body>
<img src="http://www.webjx.com/htmldata/sort/compman.gif" width="107" height="98" />
<form>
<input type="button" onclick="setWidth()" value="Change Width">
</form>
</body>
</html>
定位：
显示当前页的地址和改变当前页的地址
<html>
<head>
<script type="text/javascript">
function curr_Location()
{
alert(location)
}
function change_Location()
{
window.location="http://www.w3schools.com"
}
</script>
</head>
<body>
<form>
<input type="button" onclick="curr_Location()" value="Show current URL">
<input type="button" onclick="change_Location()" value="Change URL">
</form>
</body>
</html>
刷新页面
<html>
<head>
<script type="text/javascript">
function refresh()
{
window.location.reload()
}
</script>
</head>
<body>
<form>
<input type="button" value="Refresh page" onclick="refresh()">
</form>
</body>
</html>
导航对象
检测你的浏览器
<html>
<body>
<script type="text/javascript">
document.write("You are browsing this site with: "+ navigator.appName)
</script>
</body>
</html>
显示浏览器更加详细的信息
<html>
<body>
<script type="text/javascript">
document.write("<p>Browser: ")
document.write(navigator.appName + "</p>")
document.write("<p>Browserversion: ")
document.write(navigator.appVersion + "</p>")
document.write("<p>Code: ")
document.write(navigator.appCodeName + "</p>")
document.write("<p>Platform: ")
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