HTML DOM Area host property
Area objects Definition and Usage
host property sets or returns grams href attribute value hostname: port section.
grammar
areaObject.host=hostname:port
Browser Support
All major browsers support host properties
Tips and Notes
Note: If the port has not been specified in the URL, or port 80 (default value), some browsers will not display the port section.
Examples
Examples
The following example returns the host name and port "Venus" area:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
</head>
<body>
<img src="planets.gif" width="145" height="126" usemap="#planetmap">
<map name="planetmap">
<area id="venus" shape="circle" coords="124,58,8" alt="Venus" href="venus.htm">
</map>
<p>金星区域的 hostname:port:
<script>
document.write(document.getElementById('venus').host);
</script>
</p>
<p><b>注意:</b>如果没有指定端口部分的URL,或者是80(默认),一些浏览器将不会显示端口的部分。</p>
</body>
</html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
</head>
<body>
<img src="planets.gif" width="145" height="126" usemap="#planetmap">
<map name="planetmap">
<area id="venus" shape="circle" coords="124,58,8" alt="Venus" href="venus.htm">
</map>
<p>金星区域的 hostname:port:
<script>
document.write(document.getElementById('venus').host);
</script>
</p>
<p><b>注意:</b>如果没有指定端口部分的URL,或者是80(默认),一些浏览器将不会显示端口的部分。</p>
</body>
</html>
Examples of the above output:
金星区域的 hostname:port: www.w3big.com
try it"
Area objects