check if array has same values javascript
const allEqual = arr => arr.every(v => v === arr[0]);
allEqual([1,1,1,1]); // truecheck if array has same values javascript
const allEqual = arr => arr.every(v => v === arr[0]);
allEqual([1,1,1,1]); // truejavascript get elements that exist in two arrays
function getArraysIntersection(a1,a2){
return a1.filter(function(n) { return a2.indexOf(n) !== -1;});
}
var colors1 = ["red","blue","green"];
var colors2 = ["red","yellow","blue"];
var intersectingColors=getArraysIntersection(colors1, colors2); //["red", "blue"]Copyright © 2021 Codeinu
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