title
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HTML DOM title 属性
定义和用法
title 属性设置或返回元素的标题。
语法
HTMLElementObject.title=title
浏览器支持
所有主要浏览器都支持 title 属性
实例 1
返回 body 元素的 title属性：
<html>
<body id="myid" title="mytitle">
<script>
var x=document.getElementsByTagName(‘body‘)[0];
document.write("Body title: " + x.title);
document.write("<br>");
document.write("An alternate way: ");
document.write(document.getElementById(‘myid‘).title);
</script>
</body>
</html>
<body id="myid" title="mytitle">
<script>
var x=document.getElementsByTagName(‘body‘)[0];
document.write("Body title: " + x.title);
document.write("<br>");
document.write("An alternate way: ");
document.write(document.getElementById(‘myid‘).title);
</script>
</body>
</html>
输出结果:
Body title: mytitle
An alternate way: mytitle
An alternate way: mytitle
实例 2
返回图像中的区域地图标题：
<html>
<body>
<img src ="planets.gif"
width="145" height="126"
alt="Planets"
usemap ="#planetmap">
<map name ="planetmap">
<area id="venus" shape="circle"
coords ="124,58,8"
title="Venus"
href ="venus.htm">
</map>
<p>Venus‘ advisory title (mouse over the Venus planet):
<script>
var x=document.getElementById(‘venus‘)
document.write(x.title)
</script>
</p>
</body>
</html>
<body>
<img src ="planets.gif"
width="145" height="126"
alt="Planets"
usemap ="#planetmap">
<map name ="planetmap">
<area id="venus" shape="circle"
coords ="124,58,8"
title="Venus"
href ="venus.htm">
</map>
<p>Venus‘ advisory title (mouse over the Venus planet):
<script>
var x=document.getElementById(‘venus‘)
document.write(x.title)
</script>
</p>
</body>
</html>