jQuery width()

jQuery width() method sets or returns the width of selected element.

Syntax:

When used to return the width:

$(selector).width()  

When used to set the width:

$(selector).width(value)  

When used to set the width using a function:

$(selector).width(function(index,currentwidth)) 

Value:

  • Value is a compulsory parameter of jQuery width() method, as it specifies the width to set in px, em, pt etc.

Function:

  • It is an optional parameter.
  • The function parameter is used to return the new width of selected element.

Index:

  • Index is an argument passed within the function.
  • It is used to give an index position to an element in the set.

Currentwidth:

  • This parameter returns the current width of the selected element.

Example 1

<!DOCTYPE html>  
<html>  
<head>  
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>  
<script>  
$(document).ready(function(){  
	$("button").click(function(){  
     	alert("Width: " + $("div").width());  
	});  
});  
</script>  
</head>  
<body>  
<div style="height:100px;width:500px;padding:10px;margin:3px;border:1px solid blue;background-color:lightpink;"></div><br>  
<button>Width</button>  
</body>  
</html>

Try it

JS Bin on jsbin.com

Example 1

<!DOCTYPE html>  
<html>  
<head>  
<style>  
  div {  
	width: 100px;  
	height: 80px;  
	float: left;  
	margin: 5px;  
	background:orange;  
	cursor: pointer;  
  }  
  .mod {  
	background: turquoise;  
	cursor: default;  
  }  
  </style>  
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>  
</head>  
<body>  
<div>Thick</div>  
<div>Thin</div>  
<div>Thinner</div>  
<div>Thinnest</div>  
 
<script>  
var modWidth = 70;  
$( "div" ).one( "click", function() {  
  $( this ).width( modWidth ).addClass( "mod" );  
  modWidth -= 10;  
});  
</script>  
</body>  
</html>

Try it

JS Bin on jsbin.com

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