Ways to distinguish between two div elements that have scroll bars and those that do not

Question

Ways to distinguish between two div elements that have scroll bars and those that do not

I created a div with CSS styling.

.comment-list {
margin: 20px 0;
max-height: 100px;
min-height: 100px;
overflow-y: scroll;
width: 100%;
background-color:#000;
}

Here is the HTML code for the div:

<div class="comment-list"> </div>

When the content in the div exceeds its height, a scroll bar appears. How can I use jQuery to determine if the scroll bar is present or not?

You can view an example at this link: http://jsfiddle.net/0p0k3f2h/

In the demo provided in the above link, I have shown the div both with and without content.

javascript jquery html css

Answer 1

Answer №1

Your inquiry : how do I ascertain if a scroll bar is visible using Jquery?

You can verify by comparing the height() with scrollHeight:

$('.comment-list').each(function(i){
   if ($(this).height() < $(this).get(0).scrollHeight){
      $(this).prepend('has Scrollbar').css('color', 'white');
   }
});

.comment-list {
    margin: 20px 0;
    max-height: 100px;
    min-height: 100px;
    overflow-y: scroll;
    width: 100%;
    background-color:#000;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="comment-list"> </div>
      
<div class="comment-list">
    foo<br/>foo<br>foo<br>foo<br>foo<br>foo<br>foo<br>
    foo<br>foo<br>foo<br>foo<br>foo<br>foo<br>foo<br>foo<br>
</div>

Answer 2

Your inquiry : how do I ascertain if a scroll bar is visible using Jquery?

You can verify by comparing the height() with scrollHeight:

$('.comment-list').each(function(i){
   if ($(this).height() < $(this).get(0).scrollHeight){
      $(this).prepend('has Scrollbar').css('color', 'white');
   }
});

.comment-list {
    margin: 20px 0;
    max-height: 100px;
    min-height: 100px;
    overflow-y: scroll;
    width: 100%;
    background-color:#000;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="comment-list"> </div>
      
<div class="comment-list">
    foo<br/>foo<br>foo<br>foo<br>foo<br>foo<br>foo<br>
    foo<br>foo<br>foo<br>foo<br>foo<br>foo<br>foo<br>foo<br>
</div>

Answer 3

Answer №2

If you're looking to hide the scroll bar when it's not needed, you can use the following CSS code snippet:

Check out this example.

.comment-list {
margin: 20px 0;
max-height: 100px;
min-height: 100px;
overflow-y: auto;
width: 100%;
background-color:#000;
}

Answer 4

If you're looking to hide the scroll bar when it's not needed, you can use the following CSS code snippet:

Check out this example.

.comment-list {
margin: 20px 0;
max-height: 100px;
min-height: 100px;
overflow-y: auto;
width: 100%;
background-color:#000;
}

Answer 5

Answer №3

With jquery's "scroll" function, it is simple to detect.

 $( ".comment-list" ).scroll(function() {
    // scrollbar detected
 }

Answer 6

With jquery's "scroll" function, it is simple to detect.

 $( ".comment-list" ).scroll(function() {
    // scrollbar detected
 }

Answer 7

Answer №4

To check for the presence of a scroll bar, utilize javascript (or jquery for those who prefer) to determine the height of an interior element. If it exceeds the maximum height of its parent element, a scrollbar will be necessary.

Answer 8

To check for the presence of a scroll bar, utilize javascript (or jquery for those who prefer) to determine the height of an interior element. If it exceeds the maximum height of its parent element, a scrollbar will be necessary.

Answer 9

Answer №5

In order to make the div only show a scrollbar when necessary, you must switch from using overflow-y: scroll; to overflow-y: auto;:

.content-box {
margin: 10px 0;
max-height: 150px;
min-height: 150px;
overflow-y: auto;
width: 100%;
background-color:#333;
}

Check out the updated live demo here.

If the content inside the div requires scrolling, it will be enabled; otherwise, no scrollbar will appear.

Answer 10

In order to make the div only show a scrollbar when necessary, you must switch from using overflow-y: scroll; to overflow-y: auto;:

.content-box {
margin: 10px 0;
max-height: 150px;
min-height: 150px;
overflow-y: auto;
width: 100%;
background-color:#333;
}

Check out the updated live demo here.

If the content inside the div requires scrolling, it will be enabled; otherwise, no scrollbar will appear.

Ways to distinguish between two div elements that have scroll bars and those that do not

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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