How to avoid jQuery function conflict with any other JavaScript library

JavascriptWeb DevelopmentFront End Technology

In this tutorial, we will learn how to avoid jQuery function conflict with any other JavaScript library.

For the jQuery function, the $ symbol is simply an identifier. A $ followed by a selector indicates that it is a jQuery selector. It is given a shorter identification as $ to save time while writing longer syntax. It includes all of the functions needed by a jQuery object, such as animation(), show(), hide(), show(), CSS, and many others. Furthermore, $ is superior in terms of memory to jQuery because $ takes a byte while jQuery uses 6 bytes for the same purpose.

But sometimes, when using multiple libraries, the $ sign can clash with the functions of other libraries. You may use many JS libraries for various purposes in your web applications, including jQuery. Different libraries utilize aliases to call their methods or for other purposes.

There should be no problem utilizing "$" as an alias when using simply the jQuery library. However, if other JS libraries in your project also use the "$" alias, there may be code conflict and unexpected results.

Following are the methods to avoid jQuery function conflict with any other JavaScript library.

Using the jQuery noConflict() Method

$ as a function or variable name can be utilized in many JavaScript libraries, including jQuery. In the case of jQuery, $ is only an alias for jQuery. Hence, all functionality is available without the use of $. If you need to utilize another JavaScript library alongside jQuery, use $.noConflict() to return control of $ to the other library. The noConflict() method is included in jQuery, and the "$" symbol is commonly used as a shortcut identifier. The jQuery saves old $ references during setup; noConflict(),restores them.

If two versions of jQuery are loaded (which is not advised), using $.noConflict(true) from the second version will restore the first version's globally scoped jQuery variables.

Syntax

var $x = jQuery.noConflict();

The $x is now an alias to the jQuery function. The $x is used instead of $ in the function.

Example

In this example, we have used two JavaScript libraries in a program. Two JavaScript libraries are used in the same code, and both employ the identical "$" symbol to select items. A box is created with parameters such as margin-left, border, width, height, background color, and text color. The noConflict() method uses $x as an alias for $ symbol. The function operates to fetch the box element and show it on the user's screen.

<html> <head> <style> #box { margin-left: 20px; border: 2px dashed black; width: 500px; height: 300px; background-color: orange; color: white; } </style> <script src = "https://code.jquery.com/jquery-3.5.0.js"> </script> <script src = "prototype.js"> </script> <script> var $x = jQuery.noConflict(); // $x is now an alias to the jQuery function $x(document).ready(function() { $x( "div" ).show(); }); $( "content" ).style.display = "none"; </script> </head> <body> <h3> Avoid jQuery function conflict with any other JavaScript library using <i> noConflict() </i> method </h3> <div id = "box"> <p> This is a box </p> </div> </body> </html>

Using jQuery Keyword

The jQuery keyword is used as an alias for the $ symbol in functions to avoid conflict with other JavaScript libraries. If the user replaces the $ sign, the program will work similarly.

Syntax

jQuery(document).ready(function() {
   // code
};

The jQuery keyword is a replacement for the $ sign in jQuery to avoid conflicts with other libraries using the same $ sign.

Example

In this example, two JavaScript libraries were utilized in a program. Two JavaScript libraries are used in the same code, and both utilize the same "$" symbol to select objects. A box is created with the margin-left, border, width, height, background color, and text color parameters. The term jQuery is an alias for the $ sign. It functions similarly to the $ symbol in jQuery. The function executes an action to retrieve the box element and display it on the user's screen.

<html> <head> <style> #box { margin-left: 20px; border: 2px dashed black; width: 300px; height: 300px; background-color: red; color: white; } </style> <script src = "https://code.jquery.com/jquery-3.5.0.js"></script> <script src = "new.js"> </script> <script> jQuery(document).ready(function() { jQuery( "div" ).show(); }); jQuery( "content" ).style.display = "none"; </script> </head> <body> <h3> Avoid jQuery function conflict with any other JavaScript library using <i> jQuery </i> keyword </h3> <div id = "box"> <p> This is a box </p> </div> </body> </html>

In this tutorial, we have seen two methods to avoid any function conflict in jQuery with another JavaScript library. The first method is to use an alias with the help of the noConflict() method in jQuery. The second method uses the keyword "jQuery" instead of the conventional $ symbol for function declaration.

raja
Updated on 12-Oct-2022 11:47:03

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