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thejsj/index.js

Created December 12, 2016 07:02
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Javascript Cloning for Arrays
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index.js
var a = [1, 2, 3]
var b = a // b now points to the same array as a
a === b // true
var c = [...a] // Makes a shallow copy of the array
c === a // false
a.push(4)
b // [1, 2, 3, 4]
c // [1, 2, 3]
a = null
b // [1, 2, 3, 4] Still point to the same array
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