resize array javascript
// Quick way
a = ['A','B','C','D'];
console.log(a.length); // 4
a.length = 3;
console.log(a); // ['A', 'B', 'C'];
// Proper way
function resize(arr, newSize, defaultValue) {
return [ ...arr, ...Array(Math.max(newSize - arr.length, 0)).fill(defaultValue)];
}use length to resize an array
let array = [11, 12, 13, 14, 15];
console.log(array.length); // 5
array.length = 3;
console.log(array.length); // 3
console.log(array); // [11,12,13]
array.length = 0;
console.log(array.length); // 0
console.log(array); // []Copyright © 2021 Codeinu
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