如何将 dd/mm/yyyy 字符串转换为 JavaScript 日期对象? [英] How to convert dd/mm/yyyy string into JavaScript Date object?

问题描述

如何将格式为 23/10/2015 的日期转换为JavaScript 日期格式:

How to convert a date in format 23/10/2015 into a JavaScript Date format:

Fri Oct 23 2015 15:24:53 GMT+0530 (India Standard Time)

推荐答案

MM/DD/YYYY 格式

如果您有 MM/DD/YYYY 格式，这是 JavaScript 的默认格式，您只需将字符串传递给 Date(string) 构造函数.它会为你解析它.

MM/DD/YYYY format

If you have the MM/DD/YYYY format which is default for JavaScript, you can simply pass your string to Date(string) constructor. It will parse it for you.

var dateString = "10/23/2015"; // Oct 23

var dateObject = new Date(dateString);

document.body.innerHTML = dateObject.toString();

如果您使用这种格式，那么您可以拆分日期以分别获取日、月和年，然后在另一个构造函数中使用它 - Date(year, month, day):

If you work with this format, then you can split the date in order to get day, month and year separately and then use it in another constructor - Date(year, month, day):

var dateString = "23/10/2015"; // Oct 23

var dateParts = dateString.split("/");

// month is 0-based, that's why we need dataParts[1] - 1
var dateObject = new Date(+dateParts[2], dateParts[1] - 1, +dateParts[0]); 

document.body.innerHTML = dateObject.toString();

有关更多信息，您可以在 Mozilla 开发者网络.

For more information, you can read article about Date at Mozilla Developer Network.

或者，您可以使用 moment.js 库，这可能是最受欢迎的库在 JavaScript 中解析和操作日期和时间:

Alternatively, you can use moment.js library, which is probably the most popular library to parse and operate with date and time in JavaScript:

var dateString = "23/10/2015"; // Oct 23

var dateMomentObject = moment(dateString, "DD/MM/YYYY"); // 1st argument - string, 2nd argument - format
var dateObject = dateMomentObject.toDate(); // convert moment.js object to Date object

document.body.innerHTML = dateObject.toString();

<script src="https://momentjs.com/downloads/moment.min.js"></script>

在所有三个示例中，dateObject 变量都包含一个 Date，代表一个时刻，可以进一步转换为任何字符串格式.

In all three examples dateObject variable contains an object of type Date, which represents a moment in time and can be further converted to any string format.

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