Case with bootstrap:
Example code
function( $ ){
}( window.jQuery );
Case with bootstrap: Example code function( $ ){ }( window.jQuery );
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That’s done so you can guarantee
$is actually jQuery within that function. Sometimes libraries will attempt to use the same symbol and conflicts can occur (e.g. Prototype and jQuery can both use$). This is particularly important in code that is widely distributed and may be used in many environments and configurations, like bootstrap.Using this idiom can also help prevent the introduction of unwanted variables into the global scope.