split string doesn't work

Question

for my form validation i wrote a function that split the date in 3 pieces. The pieces are split by "\"

So the date looks like "01\01\2013"

here's my function

function check_date() {

                    var input = $('#start_date').val();
                    var lines = input.split('\\');
                    if (lines[0] <= 31) {
                        $('#start_date').css({'border': '1px solid #b0b0b0'});
                    } else {
                        $('#start_date').css({'border': '1px solid red'});
                    } 
                    if (lines[1] <= 12) {
                        $('#start_date').css({'border': '1px solid #b0b0b0'});
                    } else {
                        $('#start_date').css({'border': '1px solid red'});
                    }

                }

but this doesn't work at all...

is there anyone who can help?

Thx :)

Can you use the console to see if `input` really is what you think it is? Because if it's what you say it is, there is no reason why it shouldn't work. — Matt Burland, Aug 28 '13 at 13:27
okay, this is stupid, i forgot to call the function in the onblur of the input ... =) thx all.. — MrSkippy, Aug 28 '13 at 13:30
@BrechtSchepens: I recommend using a `Date` object to check for valid/invalid dates (then you can use something [similar to this](http://stackoverflow.com/questions/1353684/detecting-an-invalid-date-date-instance-in-javascript) to see if it's good). Checking if <= 31 days is only good if it's not, say, February. — Brad Christie, Aug 28 '13 at 13:31

h2ooooooo · Answer 1 · 2013-08-28T13:29:24.120

You're splitting by \\ but the date is split by /.

Do you mean input.split('/');?

\\ is equal to a literal backslash character, which would work fine if the date was 01\01\2013.

You say that it was actually \\ but it works fine?

var input = '01\\01\\2013';
var lines = input.split('\\');

if (lines[0] <= 31) {
    console.log('Lines[0] is OK'); //It reaches this
} else {
    console.log('Lines[0] is NOT OK');
}

if (lines[1] <= 12) {
    console.log('Lines[1] is OK'); //It reaches this
} else {
    console.log('Lines[1] is NOT OK');
}

split string doesn't work

1 Answers1