compare datetime currentdate javascript

Question

I've txtStartDate control like that format : 09.03.2012

I want to compare txtStartDate value CurrentDate. if txtStartDate bigger than CurrentDate, i want to return true. how to to this?

http://stackoverflow.com/questions/1576753/parse-date-string-in-javascript — Behrang, Mar 07 '12 at 10:06

score 2 · Accepted Answer · answered Mar 07 '12 at 10:02

Dates in javascript suck. I recommend using this library FWIW, http://www.datejs.com/

Specifically http://code.google.com/p/datejs/wiki/APIDocumentation#compare

and related

Also see

http://code.google.com/p/datejs/wiki/APIDocumentation#parse for actually converting the text to a date object.

Teemu · Answer 2 · 2012-03-07T11:09:23.483

1

Reverse your dates: 20120309, comparing is easy.

function chgDate(dte){
    var pm=new String(dte.getMonth()+1);if(pm.length<2) pm='0'+pm;
    var pd=new String(dte.getDate());if(pd.length<2) pd='0'+pd;
    var py=dte.getFullYear();
    return new Number(py+pm+pd);
}

function chgControl(dte){
    dte=dte.split('.');
    return new Number(dte[2]+dte[1]+dte[0]);
}

bool=(chgControl('09.03.2012')>chgDate(new Date()));

edited Mar 07 '12 at 11:09

answered Mar 07 '12 at 10:05

Teemu

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or just .getTime(), this still doesn't solve parsing the format into a date. – j_mcnally Mar 07 '12 at 10:07
@j_mcnally Parsing the date now. – Teemu Mar 07 '12 at 10:25

score 0 · Answer 3 · answered Mar 07 '12 at 10:03

You'll want to create a Date object from the text you have. This will probably involve taking the string and splitting it up and passing it to the Date(year, month, day) constructor. I can't tell which way round your days and months are though so I can't give you example code.

Once you've created a Date object you can compare it to the current date, which you can get using new Date().

compare datetime currentdate javascript

3 Answers3