Utilize jQuery to target a specific attribute with a filtering value and apply a new class

I'm having trouble locating a specific post about this issue.

Essentially, I want to hide the Compare text if the data-product-id is less than someValue

After doing some research, I came up with this code snippet. There are no errors, but the code doesn't seem to be working as expected. I suspect there is something wrong with my code.

Could someone please explain what's incorrect in my code and provide guidance on how to correct it?

$("a[data-product-id]").filter(function() {
    return parseInt($(this).attr("data-product-id")) < 99335;
    $('.show').addClass('hide');
});
.hide {
  display: none !important
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<a href="#" class="button" data-product-id="99336" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99335" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99334" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99333" rel="nofollow"><p class="show">Compare</p></a>

javascriptjqueryhtmlcss

Answer №1

Here are some issues to address:

  • Firstly, the code is using the return statement, causing anything after it to not execute (resulting in $('.show').addClass('hide') never being called).
  • No conditional check is performed on the value of data-product-id; it is simply returned. Consider enclosing this line within an if statement instead of using return.
  • The final problem lies in calling $('.show').addClass('hide'), which hides all elements with the class .show if any parent meets the condition. To resolve this, utilize .find() with $(this).find('.show').

Take a look at the revised example below:

$("a[data-product-id]").filter(function() {
  if (parseInt($(this).attr("data-product-id")) < 99335) {    
    $(this).find('.show').addClass('hide');
  }
});
.hide {
  display: none !important
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<a href="#" class="button" data-product-id="99336" rel="nofollow">
  <p class="show">Compare</p>
</a>
<a href="#" class="button" data-product-id="99335" rel="nofollow">
  <p class="show">Compare</p>
</a>
<a href="#" class="button" data-product-id="99334" rel="nofollow">
  <p class="show">Compare</p>
</a>
<a href="#" class="button" data-product-id="99333" rel="nofollow">
  <p class="show">Compare</p>
</a>

Answer №2

There were a couple of issues:

  • Once the return statement is reached, the code stops executing.
  • You also need to capture the current "a" tag in order to hide it.

Take a look at the demo I created below

$("a[data-product-id]").filter(function() {
    if( parseInt($(this).attr("data-product-id")) < 99335){
    $(this).removeClass('show').addClass('hide');}
});
.hide {
  display: none !important
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<a href="#" class="button" data-product-id="99336" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99335" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99334" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99333" rel="nofollow"><p class="show">Compare</p></a>

Answer №3

Instead of halting the execution of your callback function with a return statement, consider using a comparison operator like if to control the flow.

Also, remember to only target the children of the current element using jQuery's 'children' or 'find' method.

Avoid using !important in CSS whenever possible.

I hope this information helps resolve the issue.

$("a[data-product-id]").filter(function() {
    if(parseInt($(this).attr("data-product-id")) < 99335){
        $(this).children('.show').addClass('hide');
    }
});
.hide {
  display: none;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<a href="#" class="button" data-product-id="99336" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99335" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99334" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99333" rel="nofollow"><p class="show">Compare</p></a>

Answer №4

Within your function, the comparison result is returned, causing the function to exit and skipping the final part of your code. To avoid this, consider using an if statement to only continue execution if the data-product-id is less than 99335.

Additionally, when using $('.show'), all elements with the class show are selected every time. To narrow down the selection to child elements only, utilize jQuery's find() method.

$("a[data-product-id]").filter(function() {
    if (parseInt($(this).attr("data-product-id")) < 99335)
        $(this).find('.show').addClass('hide');
});
.hide {
  display: none !important
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<a href="#" class="button" data-product-id="99336" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99335" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99334" rel="nofollow"><p class="show">Compare</p></a>
<a href="#" class="button" data-product-id="99333" rel="nofollow"><p class="show">Compare</p></a>

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