? jQuery noConflict()

? Quick Overview

jQuery noConflict() is used to avoid conflicts between jQuery and other JavaScript libraries that use the $ symbol. It releases the $ shortcut so that other libraries can use it safely.

? Key Concepts

• $ symbol is commonly used by jQuery
• Other libraries (like Prototype or MooTools) may also use $
• noConflict() restores control of $
• jQuery can still be accessed using a custom variable

? Syntax / Theory

When multiple libraries use the same global variable ($), JavaScript conflicts can occur. The jQuery.noConflict() method prevents this by releasing the $ identifier.

// Release the $ symbol used by jQuery
jQuery.noConflict();

? Code Example(s)

// Assign jQuery to a new variable
var jq = jQuery.noConflict();

// Use jq instead of $
jq(document).ready(function() {
jq("p").css("color", "blue");
});

? Live Output / Explanation

? Interactive Example

Click the buttons below to see how noConflict() works. We will "hijack" the $ variable with a fake library and see if jQuery can still run.

// Simulate another library using $
var $ = function() {
  return "I am a different library!";
};

// Use jQuery safely with noConflict
var jq = jQuery.noConflict();
jq(function() {
  jq("#status-display").text("jQuery is working using 'jq' alias!");
});

? Use Cases

• Working with legacy JavaScript libraries
• Using multiple frameworks on the same page
• Embedding jQuery into third-party platforms
• Preventing global namespace pollution

? Tips & Best Practices

? Try It Yourself