toUTCString() 方法把一个日期转换为一个字符串，使用UTC时区。
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语法
dateObj.toUTCString()
返回值
返回使用UTC时区表示给定日期的字符串
描述
toUTCString 的返回值是一个使用UTC时区的易读格式字符串。返回值的格式可能随平台而变化。通常返回值是一个 RFC-1123 格式的时间戳，这是一个 RFC-822 时间戳的小幅更新版。
例子
例子：使用toUTCString
var today = new Date(); var UTCstring = today.toUTCString(); // Mon, 03 Jul 2006 21:44:38 GMT
规范
| 规范版本 | 规范状态 | 注解 |
|---|---|---|
| ECMAScript 1st Edition. Implemented in JavaScript 1.3 | Standard | Initial definition. |
| ECMAScript 5.1 (ECMA-262) Date.prototype.toUTCString |
Standard | |
| ECMAScript 2015 (6th Edition, ECMA-262) Date.prototype.toUTCString |
Standard |
浏览器兼容性
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