Is there a way to replace a portion of a String at a given position in javascript.For instance I want to replace 00 in the hours column with 12 in the below string.The substring comes at 13 to 15.
Mar 16, 2010 00:00 AM
A:
Suraj Chandran
2010-02-10 11:05:21
+1
A:
The following is one option:
var myString = "Mar 16, 2010 00:00 AM";
myString = myString.substring(0, 13) +
"12" +
myString.substring(15, myString.length);
Note that if you are going to use this to manipulate dates, it would be recommended to use some date manipulation methods instead, such as those in DateJS.
Daniel Vassallo
2010-02-10 11:05:23
A:
One option would be
>>> var test = "Mar 16, 2010 00:00 AM";
>>> test.replace(test.substring(13,15),"12")
AutomatedTester
2010-02-10 11:07:31
Wouldn't that give "Mar 16, 2010 12:12 AM"? You could change it to `test.replace(test.substring(13,16),"12:")` I think (similar to haim's method).
Dominic Rodger
2010-02-10 11:10:33
@Dominic: Good point, but actually it will replace it correctly in this case, because the JavaScript replace() method only replaces the first occurrence. But if the date was "Mar 16 2000", it would not have worked.
Daniel Vassallo
2010-02-10 11:13:57
@Daniel - interesting - seems like an odd implementation of String::replace. Thanks for the correction!
Dominic Rodger
2010-02-10 11:22:26
+1
A:
if it is always 00: in hours,
you can just replace 00: with 12:
using replace() ,
if not u need find the indexOf the : character ,
and then replace 2 digit before with 12.
Haim Evgi
2010-02-10 11:09:39
A:
A regex approach
"Mar 16, 2010 00:00 AM".replace(/(.{13}).{2}/,"$112")
Mar 16, 2010 12:00 AM
S.Mark
2010-02-10 11:17:04