date.toISOString

toISOString() 方法返回一个 ISO（ISO 8601 Extended Format）格式的字符串： YYYY-MM-DDTHH:mm:ss.sssZ。时区总是UTC（协调世界时），加一个后缀“Z”标识。

语法

dateObj.toISOString()

返回值

根据世界时间用ISO 8601格式给定日期的字符串。

例子

Using toISOString()

var today = new Date('05 October 2011 14:48 UTC'

console.log(today.toISOString() // Returns 2011-10-05T14:48:00.000Z

上面的例子使用了非标准的字符串值的解析，可能在非Mozilla浏览器中不能正确解析。

Polyfill

if (!Date.prototype.toISOString) {
  (function() {

    function pad(number) {
      if (number < 10) {
        return '0' + number;
      }
      return number;
    }

    Date.prototype.toISOString = function() {
      return this.getUTCFullYear() +
        '-' + pad(this.getUTCMonth() + 1) +
        '-' + pad(this.getUTCDate()) +
        'T' + pad(this.getUTCHours()) +
        ':' + pad(this.getUTCMinutes()) +
        ':' + pad(this.getUTCSeconds()) +
        '.' + (this.getUTCMilliseconds() / 1000).toFixed(3).slice(2, 5) +
        'Z';
    };

  }()
}

规格

Specification	Status	Comment
ECMAScript 5.1 (ECMA-262)The definition of 'Date.prototype.toISOString' in that specification.	Standard	Initial definition. Implemented in JavaScript 1.8.
ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'Date.prototype.toISOString' in that specification.	Standard
ECMAScript Latest Draft (ECMA-262)The definition of 'Date.prototype.toISOString' in that specification.	Living Standard

浏览器兼容性

Feature	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic Support	(Yes)	(Yes)	(Yes)	9	(Yes)	(Yes)

Feature	Android	Chrome for Android	Edge mobile	Firefox for Android	IE mobile	Opera Android	iOS Safari
Basic Support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)