把有时分秒的时间字符串转换为数字的时间戳的方法。

<script>
    let date = '2023-01-01 00:00:00';
    date = date.substring(0, 19).replace(/-/g, '/');
    var timestamp = new Date(date).getTime();
    console.log(timestamp); //1672502400000
</script>