Yes, You can use the Object.defineProperty() method to add Getters and Setters. For example, the below counter object uses increment, decrement, add and subtract properties,
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | var obj = {counter : 0}; // Define getters Object.defineProperty(obj, "increment", { get : function () {this.counter++;} }); Object.defineProperty(obj, "decrement", { get : function () {this.counter--;} }); // Define setters Object.defineProperty(obj, "add", { set : function (value) {this.counter += value;} }); Object.defineProperty(obj, "subtract", { set : function (value) {this.counter -= value;} }); obj.add = 10; obj.subtract = 5; console.log(obj.increment); //6 console.log(obj.decrement); //5 |
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