JavaScript method to change original object valueOf

This article describes the method of JavaScript to change the original object valueOf. Share it for your reference. The specific analysis is as follows:

All objects in JS contain valueOf methods. We can replace the valueOf of the original object through the custom valueOf function.

 function foo() { this.valueOf = function() { return 'this is my value'; }}var bar = new foo();Print( bar ); // prints: this is my valuePrint( bar == 'this is my value' ) // prints: truePrint( bar === 'this is my value' ) // prints: false

I hope this article will be helpful to everyone's JavaScript programming.