Javascript Reference - HTML DOM Area hostname Property

The hostname property sets or gets the hostname part of the href attribute value.

Browser Support


`hostname`	Yes	Yes	Yes	Yes	Yes

Syntax

Return the hostname property:

var v = areaObject.hostname

Set the hostname property:

areaObject.hostname = hostname

Parameter

Value	Description
hostname	Set the hostname of a URL

Return Value

A String representing the domain name or IP address of the URL.

Example

The following code shows how to get the hostname of the URL for a specific area in an image-map.


<!DOCTYPE html>
<html>
<body>
<!-- ww  w .  j  av  a2 s . c o m-->
<img src="http://java2s.com/style/demo/border.png" width="145" 
     height="126" usemap="#myImageMap">

<map name="myImageMap">
  <area id="myArea" shape="circle" coords="124,58,8" alt="myImage" href="http://example.com">
</map>
<p id="demo"></p>

<button onclick="myFunction()">test</button>

<script>
function myFunction() {
    var x = document.getElementById("myArea").hostname;
    document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>

The code above is rendered as follows:

Example 2

The following code shows how to change the hostname of a specific area in an image-map.


<!DOCTYPE html>
<html>
<body>
<!--from   w  w w.j  a  v  a2 s.  com-->
<img src="http://java2s.com/style/demo/border.png" width="145" 
     height="126" usemap="#myImageMap">

<map name="myImageMap">
  <area id="myArea" target="_blank" shape="circle" 
     coords="124,58,8" alt="myImage" href="http://example.com#description">
</map>
<p id="demo"></p>

<button onclick="myFunction()">test</button>

<script>
function myFunction() {
    document.getElementById("myArea").host = "www.example.com";
    document.getElementById("demo").innerHTML = "changed";
}
</script>

</body>
</html>

The code above is rendered as follows: