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Difference between jQuery `click`, `bind`, `live`, `delegate`, `trigger` and `on` functions (with an
... bubble up.
Here is a real world example:
$("form").submit(); //actually calling `.trigger('submit');`
This would run any submit handlers, for example the jQuery validation plugin, then try to submit the <form>. However if you just wanted to validate, since it's hooked up via a submit eve...
What's the difference between '$(this)' and 'this'?
...s help to do DOM things just keep this in mind.
$(this)[0] === this
Basically every time you get a set of elements back jQuery turns it into a jQuery object. If you know you only have one result, it's going to be in the first element.
$("#myDiv")[0] === document.getElementById("myDiv");
And so...
HTML5 form required attribute. Set custom validation message?
... be displayed for all fields. Add oninput="setCustomValidity('')" whenever calling setCustomValidity(). +1 to Somnath's answer.
– Tarang
Apr 27 '15 at 15:48
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Programmatically set the initial view controller using Storyboards
How do I programmatically set the InitialViewController for a Storyboard? I want to open my storyboard to a different view depending on some condition which may vary from launch to launch.
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What's the difference between subprocess Popen and call (how can I use them)?
I want to call an external program from Python. I have used both Popen() and call() to do that.
2 Answers
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Convert Rows to columns using 'Pivot' in SQL Server
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) piv;
See SQL Demo
Then if you need to generate the week number dynamically, your code will be:
DECLARE @cols AS NVARCHAR(MAX),
@query AS NVARCHAR(MAX)
select @cols = STUFF((SELECT ',' + QUOTENAME(Week)
from yt
group by Week
or...
How can you sort an array without mutating the original array?
...rr) {
return arr.concat().sort();
}
// Or:
return Array.prototype.slice.call(arr).sort(); // For array-like objects
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Using ChildActionOnly in MVC
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The ChildActionOnly attribute ensures that an action method can be called only as a child method
from within a view. An action method doesn’t need to have this attribute to be used as a child action, but
we tend to use this attribute to prevent the action methods from being invoked as a re...
Docker - how can I copy a file from an image to a host?
... Underrated answer! It also works if you add --rm to the docker create call to leave no trace of the temporary container.
– Jonathan Dumaine
Sep 17 at 21:37
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How to use custom packages
... something very obvious but I cannot find much information about this. Basically, I have these two files in the same folder:
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