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Introduction to jQuery noConflict

jQuery noConflict() method is an inbuilt method in jQuery which releases the control over the “$” shortcut identifier so as to make it available for other JS libraries to use. By applying the noConflict() method, jQuery tells other libraries that “$” shortcut does not belong to jQuery anymore. This method is of huge importance in case other JS libraries use the same “$” shortcut for their methods which may lead to a conflict in the code. It can also be used to specify a new custom name for the jQuery variables and functions. One can create his or her own alias or shortcut for jQuery using this method. The noConflict() method returns a reference to jQuery, that can be saved in a variable and used later in the code.

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This method avoids conflicting scenario and makes it possible for the libraries to work in harmony.

Syntax:

$.noConflict(removeAll)

Where removeAll is an optional parameter and returns a Boolean value which specifies whether or not to release jQuery’s control over all the jQuery variables.

Examples to Implement jQuery noConflict()

Below are the examples of JQuery noConflict:

Example #1

The following example illustrates the usage of the jQuery noConflict() method by creating a new custom alias.

Code:

varjq = $.noConflict(); jq(document).ready(function(){ jq(“#divstyle”).text(“jQuery is working fine!”); }); }); #divstyle { background: #408080; width: 400px; height: 150px; padding-top: 20px; padding-left: 5px; border-radius: 15px; text-align: center; padding:20px; font-size:24px; color:#fff; } .btn{ background-color:#2D3942; border: #2e6da4; font-size: 20px; color: #fff; letter-spacing: 1px; padding: 10px 14px; font-size: 14px; font-weight: normal; border-radius: 4px; line-height: 1.5; text-decoration:none; }

Output:

Below screen displays when the above code gets executed.

In this example, we are using the noConflict() method by creating a new custom identifier or alias to be used instead of “$”.

Here we are using “jq” as an alias instead of “$”.

We have simply declared a variable and the noConflict() method is assigned to it. Now, this variable name acts as an alias for the rest of the code.

Example #2

Code:

$.noConflict(); jQuery(document).ready(function () { jQuery(“#divanimation”).animate( { width: “toggle”, height: “toggle”, }, { duration: 5000, specialEasing: { width: “easeInOutSine”, height: “easeInOutSine”, }, complete: function () { alert(“Animation complete!”); }, } ); }); }); #divstyle { background: #408080; width: 240px; height: 300px; padding-top: 20px; padding-left: 5px; border-radius: 15px; padding: 20px; font-size: 24px; color: #fff; } #divanimation { padding: 8px; padding-left: 30px; padding-top: 30px; background: yellowgreen; width: 200px; height: 200px; box-shadow: 0 0 5px #aaa; font-size: 18px; text-align: center; border-radius: 200px; } .btncls { background-color: #2d3942; border: #2e6da4; margin-left: 12px; font-size: 15px; color: #fff; letter-spacing: 1px; padding: 8px 12px; font-size: 14px; font-weight: normal; border-radius: 4px; line-height: 1.5; text-decoration: none; }

Output:

Below screen displays when the above code gets executed.

The above code will still work even if the noConflict() method is not used.

Example #3

The following example illustrates how conflict can be avoided using the noConflict() method.

Code:

Below screen displays when the above code is executed.

In this example, we have used two JS libraries, jQuery, and prototype.

Since both these libraries use “$” as an alias, to avoid conflict in the code, the noConflict() method is required here.

By using noConflict() mode, jQuery releases its control over the “$” identifier and makes it available for the use of other libraries, here, prototype.

Immediately after the page is loaded, the jQuery goes into the noConflict mode and a new variable “j” is declared and assigned to replace the alias “$” so as to avoid conflicts with the prototype library.

Conclusion

This article talked about the importance of noConflict feature in jQuery.

jQuery noConflict() method is of great significance while working with different JS libraries or frameworks.

This method ensures that there is no conflict arising due to the different libraries in use as because most of them use the “$” identifier as an alias.

This method once applied simply means that the “$” identifier is no longer a shortcut for jQuery.