Question

How to pass object as parameter (this) to a function in JavaScript

Answer 1

function f(c, d) {
  console.log('this.a = ' + this.a);
  console.log('this.b = ' + this.b);
  console.log('c = ' + c);
  console.log('d = ' + d);
  return this.a + this.b + c + d;
}

var obj = {a: 1, b: 2};

console.log(f.call(obj, 3, 4)); 

console.log(f.apply(obj, [100, 200])); 



/*
run:

"this.a = 1"
"this.b = 2"
"c = 3"
"d = 4"
10
"this.a = 1"
"this.b = 2"
"c = 100"
"d = 200"
303

*/

 

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