javascript IE8：对象不支持此属性或方法（日期函数）
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IE8: Object Doesn't Support This Property or Method (Date function)
提问by Neil
I'm getting an error that only appears on the great IE8, it points to the following function, specifically the line: return (expDate.getTime() > Date.now());
我收到一个只出现在 IE8 上的错误，它指向以下函数，特别是该行： return (expDate.getTime() > Date.now());
$.validator.addMethod("checkDocExpiry",function(value) {
var driverLicExp = ($('#drivers-license-expiration').val()) ? $('#drivers-license-expiration').val() : '';
if (driverLicExp != ''){
var expDate = new Date(driverLicExp);
return (expDate.getTime() > Date.now());
}else{
return (true);
}
}, "Your driver's license has expired.");
I'm not sure what would cause this, I am fairly new to developing for older browsers. This runs fine in FF, IE10, Chrome, Safari.
我不确定是什么导致了这种情况，我对旧浏览器的开发还很陌生。这在 FF、IE10、Chrome、Safari 中运行良好。
Any help would be much appreciated.
任何帮助将非常感激。
Thanks
谢谢
回答by Jason P
Looks like Date.now()isn't supported in IE8 (see the table at the bottom):
看起来Date.now()在 IE8 中不受支持（请参阅底部的表格）：
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/now
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/now
new Date()should get you a date object with the current date.
new Date()应该给你一个带有当前日期的日期对象。
回答by Paul S.
Shim using the fact valueOfa Dateis ms..
Shim 使用事实valueOfa Date是ms..
if (!Date.now) Date.now = function () {return +new Date();};
回答by Neil
IE 8 does not support Date.now. Implement it as :
IE 8 不支持 Date.now。将其实现为：
if(!Date.now) { Date.now = function(){ return new Date().getTime();};}
回答by SLaks
My psychic debugging skills tell me that you're using jQuery 2.0, which does not support IE8.
我的通灵调试技巧告诉我，您使用的是不支持 IE8 的 jQuery 2.0。
You need to use 1.10.
您需要使用 1.10。
