[英]Fastest and lightest way to get the current time in milliseconds with JS Date object
[英]Parse a date object string and get time in milliseconds
我將new Date()
存儲在mongodb中。
我試圖查看日期是否少於5分鍾,所以我嘗試了:
// not working, maybe because the "previousTime" date object is now a string instead.
var isRecent = new Date().getTime() - previousTime.getTime() < 300000
// not working either, parseDate(previousTime).getTime() always gives the same 1443646800000 value
var isRecent = new Date().getTime() - parseDate(previousTime).getTime() < 3000;
function parseDate (input) {
var parts = input.match(/(\d+)/g);
// new Date(year, month [, date [, hours[, minutes[, seconds[, ms]]]]])
return new Date(parts[0], parts[1]-1, parts[2]); // months are 0-based
}
將日期字符串放在Date.parse()中,以獲取自紀元以來的時間(以毫秒為單位)。
例如:
var dateAsString = new Date().toString();
var dateInMSSinceEpoch = Date.parse(dateAsString);
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