Check whether HTML element has scrollbars using JavaScript

Given an HTML document and the task is to identify whether a particular element has scrollBars or not. There are two approaches to solve this problem which are discussed below:

Approach 1:

  • Select the particular element.
  • Get the element.scrollWidth and .clientWidth property for horizontal scrollbar.
  • Calculate the scrollWidth>clientWidth.
  • If the value comes true then horizontal scrollbar is present else not.
  • Do the same process to check vertical scrollbar.

Example 1: This example implements the above approach.



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<!DOCTYPE HTML>  
<html>  
  
<head
    <title
         Check whether HTML element has
         scrollbars using JavaScript
    </title>    
      
    <style>
        #div {
            width:200px;
            height:150px;
            overflow:auto; 
            text-align:justify;
        }
        #GFG {
            font-size: 24px;
            font-weight: bold;
            color: green;
        }
    </style>
</head>    
  
<body>
    <center>
        <h1 style = "color:green;" >  
            GeeksforGeeks  
        </h1>
          
        <h3>
            Click on the button to check
            for the scrollBars
        </h3>
      
        <div id="div">
            This course is for all those people who want to
            learn Data Structures and Algorithm from basic
            to advance level. We don't expect you to have
            any prior knowledge on Data Structure and 
            Algorithm, but a basic prior knowledge of any
            programming language ( C++ / Java) will be
            helpful. This course gives you the flexibility
            of learning, under this program you can study 
            your course whenever you feel like, you need
            not hurry or puzzle yourself.
        </div>
        <br>
          
        <button onclick = "GFG_Fun()">
            Click Here!
        </button>
          
        <div id = "GFG"></div>
          
        <script>
            function GFG_Fun() {
                var div = document.getElementById('div');
                var hs = div.scrollWidth > div.clientWidth;
                var vs = div.scrollHeight > div.clientHeight;
                  
                document.getElementById('GFG').innerHTML 
                        = "Horizontal Scrollbar - " + hs
                        +"<br>Vertical Scrollbar - " + vs;
            }
        </script
    </center>
</body>  
  
</html>

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Output:

  • Before clicking on the button:
  • After clicking on the button:

Approach 2:

  • Select the particular element.
  • Use the scrollTop and scrollLeft properties.
  • If these are greater than 0, scrollbars are present.
  • If these are 0, then first set them to 1, and test again to know if getting a result of 1.
  • Finally, set them back to 0.

Example 2: This example using the approach discussed above.

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<!DOCTYPE HTML>  
<html>  
  
<head
    <title
         Check whether HTML element has
         scrollbars using JavaScript
    </title>    
      
    <style>
        #div {
            width:200px;
            height:200px;
            overflow:none; 
            text-align:justify;
        }
        #GFG {
            font-size: 24px;
            font-weight: bold;
            color: green;
        }
    </style>
</head>    
  
<body>
    <center>
        <h1 style = "color:green;" >  
            GeeksforGeeks  
        </h1>
          
        <h3>
            Click on the button to check
            for the scrollBars
        </h3>
      
        <div id="div">
            This course is for all those people who want to
            learn Data Structures and Algorithm from basic
            to advance level. We don't expect you to have
            any prior knowledge on Data Structure and 
            Algorithm, but a basic prior knowledge of any
            programming language ( C++ / Java) will be
            helpful. 
        </div>
        <br>
          
        <button onclick = "GFG_Fun()">
            Click Here!
        </button>
          
        <div id = "GFG"></div>
          
        <script>
            function checkScrollBar(element, dir) {
                dir = (dir === 'vertical') ?
                            'scrollTop' : 'scrollLeft';
                  
                var res = !! element[dir];
                  
                if (!res) {
                    element[dir] = 1;
                    res = !!element[dir];
                    element[dir] = 0;
                }
                return res;
            }
              
            function GFG_Fun() {
                var div = document.getElementById('div');
                var hs = checkScrollBar(div, 'horizontal');
                var vs = checkScrollBar(div, 'vertical');
                  
                document.getElementById('GFG').innerHTML 
                        = "Horizontal Scrollbar - " + hs
                        +"<br>Vertical Scrollbar - " + vs;
            }
        </script
    </center>
</body>  
  
</html>

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Output:

  • Before clicking on the button:
  • After clicking on the button:


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