数组去重
一、利用 ES6 Set 去重(ES6 中最常用)
function unique(arr) {
return Array.from(new Set(arr));
}
var arr = ["1", "2", "2", "3", "4"];
console.log(unique(arr));
function unique(arr) {
return Array.from(new Set(arr));
}
var arr = ["1", "2", "2", "3", "4"];
console.log(unique(arr));