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