I have a HTML list of about 500 items and a "filter" box above it. I started by using jQuery to filter the list when I typed a letter (timing code added later): $('#filter').keyup( function() { var jqStart = (new Date).getTime(); var search = $(this).val().toLowerCase(); var $list = $('ul.ablist > li'); $list.each( function() { if ( $(this).text().toLowerCase().indexOf(search) === -1 ) $(this).hide(); else $(this).show(); } ); console.log('Time: ' + ((new Date).getTime() - jqStart)); } ); However, there was a couple of seconds delay after typing each letter (particularly the first letter). So I thought it may be slightly quicker if I used plain Javascript (I read recently that jQuery's each function is particularly slow). Here's my JS equivalent: document.getElementById('filter').addEventListener( 'keyup', function () { var jsStart = (new Date).getTime()...
You could use -[NSString componentsSeparatedByString:] or NSScanner to split the string, or use NSCalendar to extract the pieces of the date you're interested in.
ReplyDeleteIf you can format date into specific format using NSDateFormatter and then convert NSDate into NSString. You can extract components from date string using componentsSeparatedByString.
ReplyDeleteNSDate *myDate = datePicker.date;//if you are getting date from date picker
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"cccc, MMM d, hh:mm aa"];//you can use any date format also
NSString *myDateString = [dateFormat stringFromDate:myDate];
You can get array of string by using this method and you can use string tokenizer according to your dateformat.for example "," string tokenizer.
[myDateString componentsSeparatedByString:@","];
Use something like [yourString componentsSeparatedByString:@"/"]. You will get an NSArray of separated strings.
ReplyDelete