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javascript check for not null
Below is a code snippet, where we retrieve a form value.
Before further processing check if the value is not null..
10 Answ...
Store images in a MongoDB database
...("./uploads/" + filename).pipe(writestream);
}
});
In your view:
<form action="/" method="post" enctype="multipart/form-data">
<input type="file" name="photos">
With this code you can add single as well as multiple images in MongoDB.
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What does the `forall` keyword in Haskell/GHC do?
...nderstand the existential notation in terms of its translation to the GADT form than on its own, but you are certainly free to think otherwise.
– dfeuer
Feb 8 '15 at 13:46
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How to use sed to replace only the first occurrence in a file?
...ion to the POSIX specification for sed that allows the following 2-address form: 0,/re/ (re represents an arbitrary regular expression here).
0,/re/ allows the regex to match on the very first line also. In other words: such an address will create a range from the 1st line up to and including the li...
Is it faster to count down than it is to count up?
...ister for zero and jumps based on the result of the test.
However, the performance difference will be negligible unless your loop is already very sensitive to clock cycle counts. Counting down to zero might shave 4 or 5 clock cycles off each iteration of the loop compared to counting up, so it's r...
Prevent a webpage from navigating away using JavaScript
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But that's not enough. What about controls inside the form? They trigger this too.
– Fandango68
Mar 8 '17 at 1:59
1
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Link to add to Google calendar
I am unclear about the exact format to have a link on a website that will add a single event to a users Google calendar. I see that eventbrite has done it here but I would love some clear specs or links in the right direction
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Best practices for Storyboard login screen, handling clearing of data upon logout
...serObj = [[User alloc] init];
// Here you can get the data from login form
// and proceed to authenticate process
NSString *username = @"username retrieved through login form";
NSString *password = @"password retrieved through login form";
[userObj loginWithUsername:username and...
Why must a lambda expression be cast when supplied as a plain Delegate parameter
Take the method System.Windows.Forms.Control.Invoke(Delegate method)
8 Answers
8
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Jquery date picker z-index issue
...It was always hidden. When I adjusted the z-index, the field on the lower form always showed up on the dialog.
I used a combination of solutions that I saw to resolve the issue.
$('.ui-datepicker', $form).datepicker({
showButtonPanel: true,
changeMonth: true,
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