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How to prevent page scrolling when scrolling a DIV element?
...;& e.preventDefault();
});
Inside the event handler, you'll need to know:
scrolling direction
d = e.originalEvent.deltaY, dir = d < 0 ? 'up' : 'down'
because a positive number means scrolling down
scroll position
scrollTop for top, scrollHeight - scrollTop - offsetHeight for bottom
If y...
How many bits or bytes are there in a character? [closed]
...ay, when NT was started a wchar_t was enough to avoid surrogate pairs, but now that it's UTF-16 even wchar_t strings can have variable-length characters, so on Windows a Unicode character in can take from 2 to 4 bytes (1 or 2 wchar_t).
– Matteo Italia
Jan 31 '1...
How can I start PostgreSQL server on Mac OS X?
...al/var/postgres stop
Start automatically
"To have launchd start postgresql now and restart at login:"
brew services start postgresql
What is the result of pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start?
What is the result of pg_ctl -D /usr/local/var/postgres status?
A...
jQuery Data vs Attr?
...ormat that was a valid representation of a Number would be cast to Number. Now, values that are numeric are only auto-cast if their representation stays the same. This is best illustrated with an example.
HTML:
<a id="foo"
href="#"
data-int="1000"
data-decimal="1000.00"
data-sci...
string.charAt(x) or string[x]?
...
Bracket notation now works on all major browsers, except for IE7 and below.
// Bracket Notation
"Test String1"[6]
// charAt Implementation
"Test String1".charAt(6)
It used to be a bad idea to use brackets, for these reasons (Source):
...
Check if an array is empty or exists
...ypeof array.length; // => "number"
Case Empty Array
Now since we tested all other possibilities, we're talking to an instance of Array. In order to make sure it's not empty, we ask about number of elements it's holding, and making sure it has more than zero elements.
firstArr...
Submit a form using jQuery [closed]
...lood - How should he have done it instead ? Newbies like us would like to know ?
– MarcoZen
Jul 21 '17 at 15:40
2
...
Batch files - number of command line arguments
...pped in square brackets to empty square brackets (which is the only way I know of testing program or subprogram arguments which may contain quotes and was an overlooked leftover from trial-and-error phase) but was since fixed to how it is now.
...
Is it possible to refresh a single UITableViewCell in a UITableView?
...opCell];
//finish refreshing
[refreshControl endRefreshing];
}
Now that you have that sorted, inside of your viewDidLoad add the following:
//refresh table view
UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init];
[refreshControl addTarget:self action:@selector(refresh:)...
Execute combine multiple Linux commands in one line
...for example myscript, and make it executable:
chmod +x myscript
You can now execute that script like other programs on the machine. But if you don't place it inside a directory listed in your PATH environment variable (for example /usr/local/bin, or on some Linux distributions ~/bin), then you wi...