Edit This Code:
<!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 path name 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, to see the effect.</p>

<button onclick="myFunction()">Try it</button>

<p id="demo"></p>

<script>
function myFunction() {
    document.getElementById("venus").pathname = "somenewpathname";
    document.getElementById("demo").innerHTML = "The pathname was changed from 'test' to 'somenewpathname'";
}
</script>

</body>
</html>


Result:
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