如何在 React Native 中获取在线当前日期和时间答案

【问题标题】：How to get Online Current Date and Time in React Native如何在 React Native 中获取在线当前日期和时间
【发布时间】：2019-05-20 20:21:10
【问题描述】：

我试图通过这个命令获取当前时间和日期

new Date()

但是当我更改手机上的时间时，它会根据我手机上的时间而改变。

我想实时获取当前时间和日期。请帮我。感谢您的回复。

【问题讨论】：

标签： android date react-native time

【解决方案1】：

你可以试试下面的代码

fetchData() {
  var URL_REGISTER = 'https://www.google.com';
  fetch(URL_REGISTER, {method: 'POST',body: formData})
      .then(
          function(response) {
              console.log(response.headers.get('Content-Type'));
              console.log(response.headers.get('Date'));

              console.log(response.status);
              console.log(response.statusText);
              console.log(response.type);
              console.log(response.url);
              if (response.status !== 200) {
                  console.log('Status Code: ' + response.status);
                  return;
              }

              // Examine the text in the response
              response.json().then(function(data) {
                  console.log(data);
              });
          }
      )
      .catch(function(err) {
          console.log('Fetch Error', err);
      });
}

参考：this stackoverflow link

【讨论】：

【解决方案2】：

new Date().getTime();

你可以使用任何你想替换 getTime() 到下面的：

/** Returns a string representation of a date. The format of the string depends on the locale. */
toString(): string;
/** Returns a date as a string value. */
toDateString(): string;
/** Returns a time as a string value. */
toTimeString(): string;
/** Returns a value as a string value appropriate to the host environment's current locale. */
toLocaleString(): string;
/** Returns a date as a string value appropriate to the host environment's current locale. */
toLocaleDateString(): string;
/** Returns a time as a string value appropriate to the host environment's current locale. */
toLocaleTimeString(): string;
/** Returns the stored time value in milliseconds since midnight, January 1, 1970 UTC. */
valueOf(): number;
/** Gets the time value in milliseconds. */
getTime(): number;
/** Gets the year, using local time. */
getFullYear(): number;
/** Gets the year using Universal Coordinated Time (UTC). */
getUTCFullYear(): number;
/** Gets the month, using local time. */
getMonth(): number;
/** Gets the month of a Date object using Universal Coordinated Time (UTC). */
getUTCMonth(): number;
/** Gets the day-of-the-month, using local time. */
getDate(): number;
/** Gets the day-of-the-month, using Universal Coordinated Time (UTC). */
getUTCDate(): number;
/** Gets the day of the week, using local time. */
getDay(): number;
/** Gets the day of the week using Universal Coordinated Time (UTC). */
getUTCDay(): number;
/** Gets the hours in a date, using local time. */
getHours(): number;
/** Gets the hours value in a Date object using Universal Coordinated Time (UTC). */
getUTCHours(): number;
/** Gets the minutes of a Date object, using local time. */
getMinutes(): number;
/** Gets the minutes of a Date object using Universal Coordinated Time (UTC). */
getUTCMinutes(): number;
/** Gets the seconds of a Date object, using local time. */
getSeconds(): number;
/** Gets the seconds of a Date object using Universal Coordinated Time (UTC). */
getUTCSeconds(): number;
/** Gets the milliseconds of a Date, using local time. */
getMilliseconds(): number;
/** Gets the milliseconds of a Date object using Universal Coordinated Time (UTC). */
getUTCMilliseconds(): number;
/** Gets the difference in minutes between the time on the local computer and Universal Coordinated Time (UTC). */
getTimezoneOffset(): number;

【讨论】：

如果我手动更改设备日期，它只会给我设备日期:(

【解决方案3】：

您可以实时向任何可靠的服务器发出请求。
您将在服务器的响应中获得Date 标头（例如Date: Thu, 20 Dec 2018 10:33:14 GMT）

【讨论】：

【解决方案4】：

您可以像这样通过互联网使用 api 获取实时时间：

 https://timezonedb.com/api

【讨论】：

非常感谢，对我很有帮助！