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 shape = "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