Learning@2017 Callback functions

JS

Callback functions

Call back functions are those function which is sending to another function as pointer parameter which will be invoking from other function whenever is required.

Here is a simple example for understanding callback functionality

function Calc(x,y,callback) {
y=x+y;
callback(y)
}

Calc(10,20,function(x){
console.log("result is "+x);
});