js数组求交集

Posted 2021-12-12 liyuchuan

求两个数组的交集

var arr1 = [1,2,3];
var arr2 = [2,3,4];
var arr3;
arr3 = arr1.filter(function(num) {
    return arr2.indexOf(num) !== -1;
});
console.log(arr3); //输出[2, 3]