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How do I check whether a jQuery element is in the DOM?
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Like this:
if (!jQuery.contains(document, $foo[0])) {
//Element is detached
}
This will still work if one of the element's parents was removed (in which case the element itself will still have a parent).
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How can I test if a letter in a string is uppercase or lowercase using JavaScript?
How can I test if a letter in a string is uppercase or lowercase using JavaScript?
28 Answers
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Composer install error - requires ext_curl when it's actually enabled
I'm trying to install Facebook PHP SDK with Composer. This is what I get
15 Answers
15...
Can you set a border opacity in CSS?
Is there a straight forward CSS way to make the border of an element semi-transparent with something like this?
9 Answers
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capturing self strongly in this block is likely to lead to a retain cycle
How can I avoid this warning in xcode. Here is the code snippet:
7 Answers
7
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Why use iterators instead of array indices?
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The first form is efficient only if vector.size() is a fast operation. This is true for vectors, but not for lists, for example. Also, what are you planning to do within the body of the loop? If you plan on accessing the elements as in
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Subtract days from a date in JavaScript
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Try something like this:
var d = new Date();
d.setDate(d.getDate()-5);
Note that this modifies the date object and returns the time value of the updated date.
var d = new Date();
document.write('Today is: ' + d.toLocaleString());
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How can bcrypt have built-in salts?
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This is bcrypt:
Generate a random salt. A "cost" factor has been pre-configured. Collect a password.
Derive an encryption key from the password using the salt and cost factor. Use it to encrypt a well-known string. Store the ...
How to represent empty char in Java Character class
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You may assign '\u0000' (or 0).
For this purpose, use Character.MIN_VALUE.
Character ch = Character.MIN_VALUE;
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What command means “do nothing” in a conditional in Bash?
...ed the code to do nothing, e.g., here, I want Bash to do nothing when $a is greater than "10", print "1" if $a is less than "5", otherwise, print "2":
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