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javascriptfunctioncall

How can create own call function in javascript?

As of my knowledge, in javascript there are three concepts; call, apply and bind I want to create these function with similar behavior.

Solution

  • Add your own call function like "_call"

    Function.prototype._call = function(newcontext, ...arg){

var demoFn = new Function('tempfuncton', 'tempthis','arg' , '{ tempthis["f"]=tempfuncton; return tempthis.f(arg);}');
demoFn(this,newcontext,arg);
}

    write a demo function

    function anyfunction(args){
console.log(this,args)
}

    call it like previous. First argument should be an object. Otherwise write a code to convert it into object.

    anyfunction._call({'mm':'my provided this object'},"arg1","arg2")