CODEWITHSUNDEEP
javascriptjquery
WebMW
WebMW

Reputation: 524

jQuery slice() Not Working Despite Chrome Dev Tools Console Verification

This is an extremely odd and simple issue that I've been stuck on now for FAR longer than I care to admit! My slice() function isn't working, anymore. I've checked the syntax a billion times. It seems to have been working at one point, that's the most complicated fact. 

jQuery(document).ready(function($){
   jQuery("h2.page_title").css('background','lime');
   jQuery("h2.page_title").text().slice(2);
});

enter image description here

The file and function are running fine, hence the lime background. However, slice() will not work, or even update through my console. It doesn't matter which element I target in the DOM. I've cleared caches, restarted all WAMP services, etc. I know the real solution is something extremely more stupid, so if you have any tips on what could be causing this, it would be extremely appreciated.

Upvotes: 1

Views: 584

Answers (3)

charlietfl
charlietfl

Reputation: 171690

If you want to slice the first 2 characters can use text(function) to return the resultant. This will also loop over any of that selector and do instance specific slicing for all

jQuery("h2.page_title")
   .css('background','lime')
   .text(function(_, currTxt) {
      return currTxt.slice(2);
   });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h2 class="page_title">First heading</h2>
<h2 class="page_title">Second heading</h2>

Upvotes: 0

Mark Schultheiss
Mark Schultheiss

Reputation: 34197

In my humble opinion the jQuery slice() is actually a misleading name that leads to confusion as it is not really the same as native JavaScript slice (for strings as you use it here). jQuery slice returns a jQuery object, NOT a string.

jQuery .slice() falls into the "Traversing and Filtering" category.

"Reduce the set of matched elements to a subset specified by a range of indices."

jQuery slice: https://api.jquery.com/slice/

Native string JavaScript .slice() on the other hand returns a string

"...extracts a section of a string and returns it as a new string, without modifying the original string."

SO, to address your specifics,

jQuery("h2.page_title").text().slice(2);

Returns a string starting at index 2 of the text - and you do nothing with that string.

Upvotes: 1

Programmer
Programmer

Reputation: 2123

When using slice the original string isn't changed. It only returns you the sliced string. You should do the assigning yourself -

var str = jQuery("h2.page_title").text().slice(2);
jQuery("h2.page_title").text(str);

or in one row -

jQuery("h2.page_title").text(jQuery("h2.page_title").text().slice(2));

Upvotes: 2

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