javascript - 如何从日期中切出 x 个字符？

Question

我使用 Date.now() 获取 unix 格式的当前时间戳。我尝试从时间戳中删除最后的 x 个字符。我尝试使用 currentTime = currentTime.slice(0, -4); 但我得到 Uncaught TypeError: currenTime.slice is not a function

currentTime = Date.now();
document.getElementById("out1").innerHTML = "out1 = " + currentTime;

currentTime = currentTime.slice(0, -4);
document.getElementById("out2").innerHTML = "out2 = " + currentTime;

<p id="out1">out1 = </p>
<p id="out2">out2 = </p>

Answer 1

您可以将日期转换为字符串:

Date.now().toString().slice(0, -4)