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syedsimanta03
syedsimanta03

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Compare two arrays - JavaScript

#javascript #react

// a and b are arrays
const isEqual = (a, b) => JSON.stringify(a) === JSON.stringify(b);

// Or
const isEqual = (a, b) => a.length === b.length && a.every((v, i) => v === b[i]);

// Examples
isEqual([1, 2, 3], [1, 2, 3]); // true
isEqual([1, 2, 3], [1, '2', 3]); // false

Top comments (1)

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bugb profile image
bugb • • Edited

Try this:

For 1st:

isEqual([()=>{}],[()=>{2}])
isEqual([NaN],[null])
//....
// expect false but true
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For 2nd:

isEqual([NaN],[NaN])

// what is your expectation?
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