javascript get elements that exist in two arrays

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Ophelia
15 Mar 2018
1function getArraysIntersection(a1,a2){
2    return  a1.filter(function(n) { return a2.indexOf(n) !== -1;});
3}
4var colors1 = ["red","blue","green"];
5var colors2 = ["red","yellow","blue"];
6var intersectingColors=getArraysIntersection(colors1, colors2); //["red", "blue"]
7
8
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