每各一秒 打印数组中的 数据

Posted 2020-10-12 Terre

var num = [1, 2, 3, 4, 5, 6],
    len = num.length,
    index = 0;
var timer = setInterval(function () {
    if(index >= len) {
        clearInterval(timer);
    } else {
        console.log(num[index]);
    }
    index++;
}, 1000);