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HTML | DOM Map areas Collection

  • Last Updated : 25 Nov, 2021

The Map areas Collection in HTML DOM is used to return the collection of all <area> elements in an image-map. The area elements are sorted as they appear in the source code. 
Syntax: 
 

mapObject.areas

Properties: It returns the number of area in the collection of elements.
Methods: The DOM Map areas Collection contains three methods which are listed below: 
 

  • [index]: It is used to return the <form> element of the specified index. The index value starts with 0. NULL value is returned if the index value is out of range.
  • item(index): It is used to return the <form> element of specified index. The index value starts with 0. NULL value is returned if the index value is out of range. This method performs similarly to the above method.
  • namedItem(id): It is used to return the <form> element from the collection which matches the specified id. NULL value is returned if the id does not exist.

Return Value : It returns an HTMLCollection Object that represents all <area> elements in an image-map in the document. The elements in the collection are sorted in the way they appear in the source code.

Example: 
 

html




<!DOCTYPE html>
<html>
 
<head>
    <title>
        HTML DOM Map  areas Collection 
    </title>
</head>
 
<body>
     <h2>
         GeeksForGeeks
     </h2>
    <h2>HTML DOM Map  areas Collection</h2>
     
    <button onclick = "GFG()">
        Click Here!
    </button>
     
     
<p></p>
  
     
    <map id = "Geeks" name = "Geeks">
         
        <area = "rect" coords = "0, 0, 110, 100"
        alt = "Geeks" href =
 
        <area shape = "rect" coords = "110, 0, 190, 100"
        alt = "For" href =
 
        <area shape = "rect" coords = "190, 0, 300, 100"
        alt = "GEEKS" href =
    </map>
     
    <img src =
    width = "300" height = "100" alt="GFG" usemap = "#Geeks">
     
    <p id = "GEEK!"></p>
  
     
    <script>
        function GFG() {
            var x = document.getElementById("Geeks").areas.length;
            document.getElementById("GEEK!").innerHTML = x;
        }
    </script>
</body
 
</html>

Output: 
 

  • Before Clicking the Button: 
     

  • After Clicking the Button: 
     

Supported Browsers: The browsers supported by HTML DOM Map areas Collection are listed below: 
 

  • Google Chrome
  • Internet Explorer
  • Firefox
  • Apple Safari
  • Opera

 


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