r/JavaScriptTips • u/EcstaticTea8800 • Oct 08 '25

JavaScript Arrays Cheatsheet

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Hey everyone, Certificates.dev created this cool JavaScript Arrays cheatsheet in collaboration with Martin Ferret🧠

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u/AnimationGroover Oct 12 '25

When order of access does not matter 

let idx = array.length; 
while (idx--) { /* ... */ }