要让解决方案在大多数浏览器上都能工作，您应该使用这种格式创建日期对象

(year, month, date, hours, minutes, seconds, ms)

例如:

dateObj = new Date(2014, 6, 25); //UTC time / Months are mapped from 0 to 11
alert(dateObj.getTime()); //gives back timestamp in ms

工作良好的IE, FF, Chrome和Safari。甚至是更老的版本。

IE开发中心:日期对象(JavaScript)

Mozilla Dev Network:日期

对我来说，问题是我忘记在YYYY-MM-DD格式的个位数月或日之前加上0。 我解析的是:2021-11-5 它应该是:2021-11-05

因此，我写了一个小工具，可以将YYYY-M-D转换为YYYY-MM-DD，即2021-1-1转换为2021-01-01:

const date = "2021-1-1"
const YYYY = date.split("-")[0];

    //convert M->MM i.e. 2->02
    const MM =
      date.split("-")[1].length == 1
        ? "0" + date.split("-")[1]
        : date.split("-")[1];

    //convert D->DD i.e. 2->02
    const DD =
      date.split("-")[2].length == 1
        ? "0" + date.split("-")[2]
        : date.split("-")[2];

    // YYYY-MM-DD
    const properDateString = `${YYYY + "-" + MM + "-" + DD}`;

    const dateObj = new Date(properDateString);

我们来晚了，但在Safari和iOS中，当使用ES6反勾而不是String()进行类型转换时，我们就遇到了这个问题

这是给'无效日期'错误

const dateString = '2011-11-18';
const dateObj = new Date(`${dateString}`); 

但这是可行的

const dateObj = new Date(String(dateString)); 

模式yyyy-MM-dd并不是Date构造函数的官方支持格式。Firefox似乎支持它，但别指望其他浏览器也能这么做。

下面是一些受支持的字符串:

; yyyy / MM / dd MM / dd / yyyy MMMM dd, yyyy MMM dd, yyyy

DateJS似乎是解析非标准日期格式的一个很好的库。

编辑:刚刚检查了ECMA-262标准。引自15.9.1.15节:

日期时间字符串格式

ECMAScript defines a string interchange format for date-times based upon a simplification of the ISO 8601 Extended Format. The format is as follows: YYYY-MM-DDTHH:mm:ss.sssZ Where the fields are as follows: YYYY is the decimal digits of the year in the Gregorian calendar. "-" (hyphon) appears literally twice in the string. MM is the month of the year from 01 (January) to 12 (December). DD is the day of the month from 01 to 31. "T" appears literally in the string, to indicate the beginning of the time element. HH is the number of complete hours that have passed since midnight as two decimal digits. ":" (colon) appears literally twice in the string. mm is the number of complete minutes since the start of the hour as two decimal digits. ss is the number of complete seconds since the start of the minute as two decimal digits. "." (dot) appears literally in the string. sss is the number of complete milliseconds since the start of the second as three decimal digits. Both the "." and the milliseconds field may be omitted. Z is the time zone offset specified as "Z" (for UTC) or either "+" or "-" followed by a time expression hh:mm This format includes date-only forms: YYYY YYYY-MM YYYY-MM-DD

它还包括只有时间的表单 附加一个可选的时区偏移量: THH:毫米 THH: mm: ss THH: mm: ss.sss 还包括“约会时间” 可以是上述的任何组合。

所以，YYYY-MM-DD似乎包含在标准中，但出于某种原因，Safari不支持它。

更新:在查看datejs文档后，使用它，你的问题应该用这样的代码来解决:

var myDate1 = Date.parseExact("29-11-2010", "dd-MM-yyyy");
var myDate2 = Date.parseExact("11-29-2010", "MM-dd-yyyy");
var myDate3 = Date.parseExact("2010-11-29", "yyyy-MM-dd");
var myDate4 = Date.parseExact("2010-29-11", "yyyy-dd-MM");

将字符串转换为日期格式(你必须知道服务器时区)

new Date('2015-06-16 11:00:00'.replace(/\s+/g, 'T').concat('.000+08:00')).getTime()  

where +08:00 =时区从服务器

“劫持约会”和“固定约会”怎么样?无依赖，min + gzip = 280 B