jQuery Utililty Functions

Rumman Ansari Software Engineer 2023-03-23 166 Share

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Table of Content:

Utilities

Consider you want have a piece of text that is to be displayed to the users. But it has a lot of blank space at the beginning and end.

Instead of writing separate code for that, you can make use of jQuery's utility function $.trim().

In order to help the developers with coding jQuery offers a number of utility methods.
They are methods without any selectors. Syntax: $.nameSpace
They help in reducing regular programming labor.

Let us see some of the commonly used utility functions

$.isArray() will return whether the given variable is an array or not.

$.isPlainObject checks is the object is created using new keyword or not.

$.merge() combines two array elements into one.

$.each() used to iterate over arrays and objects.

This is one of the important utility method used widely.
Nowadays developers use more than one stack to create a page.
Some other stack might make use of the $ symbol of jQuery which might result in conflict.
To avoid such conflict, use the $.noConflict() utility method.
This allows you to replace the $ with keyword jQuery in the script


$.noConflict();
jQuery( document ).ready(function( $ ) {
  // JQuery code. Here note that $ is replace by jQuery in ready function
});

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