代码示例:(标识:eg_js_date_convert)
<!DOCTYPE html>
<html>
<body>

<p>Date.parse(string) 返回毫秒。</p>

<p>您可以使用返回值将字符串转换为日期对象:</p>

<p id="demo"></p>

<script>
var msec = Date.parse("March 22, 2019");
var d = new Date(msec);
document.getElementById("demo").innerHTML = d;
</script>

</body>
</html>
运行结果: