Question

How to use call in JavaScript

Answer 1

var worker1 = {name: 'Holly', age: 33, from: 'NY'};
var worker2 = {name: 'Molly', age: 31, from: 'LA'};

var workerDetails = function()
{
    document.write(this.name + ' ' + this.age + ' ' + this.from + '<br />');
};


workerDetails.call(worker1);
workerDetails.call(worker2);


/*
run:
  
Holly 33 NY
Molly 31 LA
    
*/

 

70+ SQL courses for beginners and professionals

Answer 2

document.write(this + '<br />'); // the object Window


var worker1 = {name: 'Holly', age: 33, from: 'NY'};
var worker2 = {name: 'Molly', age: 31, from: 'LA'};

var workerDetails = function()
{
    document.write(this.name + ' ' + this.age + ' ' + this.from + '<br />');
    document.write(this + "<br />"); // our object worker1 and worker2 
};


workerDetails.call(worker1);
workerDetails.call(worker2);


/*
run:
  
[object Window]
Holly 33 NY
[object Object]
Molly 31 LA
[object Object]
    
*/

 

70+ SQL courses for beginners and professionals