value-equal

value-equal determines if two JavaScript values are equal using Object.prototype.valueOf.

In many instances when I’m checking for object equality, what I really want to know is if their values are equal. This is good for:

• Stuff you keep in localStorage
• window.history.state values
• Query strings

Installation

Using npm:

$ npm install --save value-equal

Then with a module bundler like webpack, use as you would anything else:

// using ES6 modules
import valueEqual from 'value-equal'
// using CommonJS modules
var valueEqual = require('value-equal')

The UMD build is also available on unpkg:

<script src="https://unpkg.com/value-equal/umd/value-equal.min.js"></script>

You can find the library on window.valueEqual.

Usage

valueEqual(1, 1)                           // true
valueEqual('asdf', 'asdf')                 // true
valueEqual('asdf', new String('asdf'))     // true
valueEqual(true, true)                     // true
valueEqual(true, false)                    // false
valueEqual({ a: 'a' }, { a: 'a' })         // true
valueEqual({ a: 'a' }, { a: 'b' })         // false
valueEqual([ 1, 2, 3 ], [ 1, 2, 3 ])       // true
valueEqual([ 1, 2, 3 ], [ 2, 3, 4 ])       // false

That’s it. Enjoy!