JavaScript shorthand tips and tricks that will save your time | by Amitav Mishra | JavaScript in Plain English

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Fri May 13 2022 15:18:39 GMT+0000 (Coordinated Universal Time)

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let arr1 = [20, 30]; 
//Longhand 
let arr2 = arr1.concat([60, 80]); 
// [20, 30, 60, 80] 
//Shorthand 
let arr2 = [...arr1, 60, 80]; 
// [20, 30, 60, 80]
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https://javascript.plainenglish.io/20-javascript-shorthand-techniques-that-will-save-your-time-f1671aab405f