prevent parent jQuery functions from interfering with child function execution

Question

prevent parent jQuery functions from interfering with child function execution

I am facing an issue with conflicting jQuery functions between parent and child elements. The child function is a bootstrap function, while the parent is a custom function. The main objective is to limit the height of the parent div (refer to the code below) when it contains excessive data. There is a toggle feature that expands the div when clicked, but this should not occur when clicking on a child element as it will also collapse down.

<div id="items" class="semiCollapsed">
  <span data-toggle="collapse" data-target="#x" > an item</span>
  <div id="x" class="collapse">description of item</div>
  ... more items ...
</div>

Here's the JavaScript code for the parent JQuery:

jQuery(document).ready(function() {
  jQuery('#items').click(function(event) {
    event.preventDefault();
    $("#items").toggleClass("semiCollapsed");
  })
});

And here's the CSS style applied:

.semiCollapsed {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-height:110px;
}

The Bootstrap Collapse functionality can be found at:

http://pastebin.com/Xfnq7R4i

The problem I'm encountering is that calling the child function triggers the parent function. How can I resolve this issue?

Check out the JSFiddle example:

http://jsfiddle.net/7fdjL3qx/

javascript jquery html css twitter-bootstrap

Answer 1

Answer №1

If the clicked item is not the target, we need to return early:

if (event.target !== this) return;

    jQuery('#items').on('click', function (event) {
        if (event.target !== this) return;
        event.preventDefault();
        $(this).toggleClass("semiCollapsed");
    });

Here's a fiddle: http://jsfiddle.net/abhiklpm/7fdjL3qx/1/

Answer 2

If the clicked item is not the target, we need to return early:

if (event.target !== this) return;

    jQuery('#items').on('click', function (event) {
        if (event.target !== this) return;
        event.preventDefault();
        $(this).toggleClass("semiCollapsed");
    });

Here's a fiddle: http://jsfiddle.net/abhiklpm/7fdjL3qx/1/

Answer 3

Answer №2

You can use event.stopPropagation(); in place of event.preventDefault(); to prevent the event from bubbling up.

Sometimes, events that occur on a child element bubble up to its parent element, causing all events bound to the parent to be executed as well.

In order to stop the event from bubbling up to the parent, you should include event.stopPropagation() within the child click events.

Answer 4

You can use event.stopPropagation(); in place of event.preventDefault(); to prevent the event from bubbling up.

Sometimes, events that occur on a child element bubble up to its parent element, causing all events bound to the parent to be executed as well.

In order to stop the event from bubbling up to the parent, you should include event.stopPropagation() within the child click events.

Answer 5

Answer №3

One way to achieve this is by checking the event target's id using event.target.id within the click element. If the id is equal to "items", then toggle the class.

jQuery(document).ready(function() {
  jQuery('#items').click(function(event) {
    event.preventDefault();
    if(event.target.id=="items")
   {
    // Instead of searching for the clicked element again using its id, use $(this)
    $(this).toggleClass("semiCollapsed");
   }
  });
});

Answer 6

One way to achieve this is by checking the event target's id using event.target.id within the click element. If the id is equal to "items", then toggle the class.

jQuery(document).ready(function() {
  jQuery('#items').click(function(event) {
    event.preventDefault();
    if(event.target.id=="items")
   {
    // Instead of searching for the clicked element again using its id, use $(this)
    $(this).toggleClass("semiCollapsed");
   }
  });
});

prevent parent jQuery functions from interfering with child function execution

Answer №1

Answer №2

Answer №3

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