HTML | DOM Map areas Collection

Last Updated : 18 Nov, 2019

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.

Example:

<!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 = 
"https://media.geeksforgeeks.org/wp-content/uploads/a1-21.png"> 
  
        <area shape = "rect" coords = "110, 0, 190, 100"
        alt = "For" href = 
"https://media.geeksforgeeks.org/wp-content/uploads/a1-22.png"> 
  
        <area shape = "rect" coords = "190, 0, 300, 100"
        alt = "GEEKS" href = 
"https://media.geeksforgeeks.org/wp-content/uploads/a1-24.png"> 
    </map> 
      
    <img src = 
"https://media.geeksforgeeks.org/wp-content/uploads/a1-25.png"
    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>