Javascript代码：数组去重

function unique(arr) {
var arr1 = [];
for (i = 0; i < arr.length; i++) {
if (arr1.indexOf(arr[i]) == -1) {
arr1.push(arr[i]);
}
}
return arr1;
}
var demo = unique(['q','q','e','d','cv']);
console.log(demo);

好好学习，天天向上