Question

js对比两个集合中是否有相同项

Answer 1

var a = [1, 2, 3, 4, 5];
var b = [5, 6, 1, 8, 9];
for (var i = 0; i < a.length; i++) {
for (var j = 0; j < b.length; j++) {
if (a[i] == b[j])
console.log(a[i] + "=" + b[j]);
}
}