JavaScript: Comparing objects or arrays for equality (not reference)
JavaScript has no built-in functions to compare two objects or arrays for equality of their contained values.
If your project uses
Lodash
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or
Underscore.js
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, you can use _.isEqual():
_.isEqual([1, 2], [2, 3]) // => false
_.isEqual([1, 2], [1, 2]) // => true
If your project already uses
Unpoly
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you may also use up.util.isEqual() in the same way:
up.util.isEqual([1, 2], [2, 3]) // => false
up.util.isEqual([1, 2], [1, 2]) // => true
If you are writing server-side code in Node.js you can use isDeepStrictEqual():
import { isDeepStrictEqual } from 'util'
isDeepStrictEqual([1, 2], [2, 3]) // => false
isDeepStrictEqual([1, 2], [1, 2]) // => true
To compare two arrays for equality in a Jasmine spec assertion, see Jasmine: Testing complex types for equality.