[英]How to compare two dates (MonthName YearNumber) in javascript
This functionality is working fine in Chrome... But not IE or FF. 此功能在Chrome浏览器中工作正常……但是IE或FF却不能。
I am trying to validate two fields that take the value of MonthName YearNumber (see screenshot). 我正在尝试验证两个采用MonthName YearNumber的值的字段(请参见屏幕截图)。
I am using Date.parse()
to get miliseconds, then compare if Start Date
<= End Date
. 我正在使用
Date.parse()
获取毫秒,然后比较Start Date
<= End Date
。
function IsStartEndDtError(StartDt, EndDt) {
//convert dates to miliseconds to compare if one is greater than other
var StartDtMili = Date.parse(StartDt);
var EndDtMili = Date.parse(EndDt);
if (StartDtMili <= EndDtMili) {
return false;
}
else {
return true;
}
}
What appears in Firebug: Firebug中显示的内容:
Since the format your date is in isn't universally supported you can try a library like Date.js : 由于您的日期格式不受普遍支持,因此您可以尝试使用类似Date.js的库:
Date.parse("November 2012")
// returns: Thu Nov 01 2012 00:00:00 GMT+0000 (GMT)
If you don't want another library you can manually replace the month names with numbers and create a new date string. 如果您不希望使用其他库,则可以手动将月份名称替换为数字并创建新的日期字符串。
Ecmascript does not seem to support full month names, if you look at "Section 15.9.1.15 Date Time String Format" in the spec . 如果您查看规范中的 “第15.9.1.15节日期时间字符串格式”,Ecmascript似乎不支持完整的月份名称。
In Firefox: 在Firefox中:
new Date("November 2012")
// Invalid Date
new Date("2012-11")
// Thu Nov 01 2012 00:00:00 GMT+0000 (GMT)
The second date format should be standardized across browsers, the first isn't. 第二种日期格式应跨浏览器标准化,第一种不是。
11 1999
, November 1999
are not parsable formats. 11 1999
年November 1999
不是解析格式。 You either need to use a date library that is more flexible with its input formats, or process your input and identify the parts in it: 您要么需要使用一种更具输入格式灵活性的日期库,要么处理您的输入并识别其中的部分:
function IsStartEndDtError(StartDt, EndDt) {
var months = {
January: 0,
February: 1,
...
};
//convert dates to miliseconds to compare if one is greater than other
var StartDtMili = (new Date(StartDt.split(" ")[1], month[StartDt.split(" ")[0]])).getTime();
var EndDtMili = (new Date(EndDt.split(" ")[1], month[EndDt.split(" ")[0]])).getTime();
if (StartDtMili <= EndDtMili) {
return false;
}
else {
return true;
}
}
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