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<!DOCTYPE html>
<html>
<body>
​
<img src="planets.gif" width="145" height="126" usemap="#planetmap">
​
<map name="planetmap">
  <area id="venus" target="_blank" shape="circle" coords="124,58,8" alt="Venus" href="http://www.example.com/test.htm">
</map>
​
<p>Click the button to change the port number of the href attribute for the "venus" area in the image-map.</p>
​
<p><b>Tip:</b> Open the "venus" area and look in the address bar before and after you have clicked the "Try it" button (the new example link is just a demonstration, and will not work).</p>
​
<button onclick="myFunction()">Try it</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  document.getElementById("venus").port = "443";
  document.getElementById("demo").innerHTML = "The port number was changed from '80' to '443'.";
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_area_port2 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:17:05 GMT -->
</html>
​
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