How to change value of the object's property

Question

I have problem with understanding one aspect.

var Car = function(name, loc) { 'use strict'; this.name = name; this.loc = loc; this.methods = { move: function() { this.loc++; }, show: function() { console.log('Position of ' + this.name + ' is: ' + this.loc); } }; }; var amy = new Car('amy', 1); var ben = new Car('ben', 9);

When I use this.loc++ it's referring to methods object, not to Car object. And location of car is not incremented. My question is how to jump to car object context from methods?

See stackoverflow.com/questions/4886632/…

joews
– joews

2015-11-14 19:36:25 +00:00
Commented Nov 14, 2015 at 19:36 — joews
– joews, Commented Nov 14, 2015 at 19:36

Oleksandr T. · Accepted Answer · 2015-11-14 19:35:31Z

You can save parent context to variable (var _this = this;), like this

var Car = function(name, loc) { 'use strict'; var _this = this; this.name = name; this.loc = loc; this.methods = { move: function() { _this.loc++; }, show: function() { console.log('Position of ' + _this.name + ' is: ' + _this.loc); } }; }; var amy = new Car('amy', 1); var ben = new Car('ben', 9); amy.methods.move(); amy.methods.move(); amy.methods.show();

Collectives™ on Stack Overflow

How to change value of the object's property

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related