How to write a self invoked function in JavaScript

Self invoked functions are function that run on themselves without need to be called, the syntax to create self invoked functions is as follows;

(function(){
    // function body
})()


the runtime will run everything in a self invoked function's body
You can pass parameters to the function using the syntax below;



(function(params){

    // function body

})(params)

parameters will be made available to the function as any other argument

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