Pass an extra argument to a callback function

Question

I have a function callWithMagic which takes a callback function as a parameter and calls it with one argument.

const callWithMagic = callback =&         


        

Answer 1

You can bind argument object to callback function:

var varObject = {var1: "findButton", var2: true};

function cbFunc() {
    console.log(this.var1+ ":" + this.var2);
}

//Example callback
datatable.ajax.reload(cbFunc.bind(varObject));