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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);
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原文地址:http://www.cnblogs.com/fjfd/p/5939362.html