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Determining whether jQuery has not found any element
...t').length is what you're looking for. (If it finds nothing, this will === 0.) So your conditional statement should probably be:
if($('#id').length) { /* code if found */ } else { /* code if not found */ }
You're getting an object returned from that alert because jQuery (almost) always returns the...
Why can't overriding methods throw exceptions broader than the overridden method?
...tends A {
@Override
public void foo() throws SocketException {..} // allowed
@Override
public void foo() throws SQLException {..} // NOT allowed
}
SocketException extends IOException, but SQLException does not.
This is because of polymorphism:
A a = new B();
try {
a.foo();
} cat...
Is there a Java equivalent to C#'s 'yield' keyword?
...options I know of is Aviad Ben Dov's infomancers-collections library from 2007 and Jim Blackler's YieldAdapter library from 2008 (which is also mentioned in the other answer).
Both will allow you to write code with yield return-like construct in Java, so both will satisfy your request. The notable ...
Using jQuery to see if a div has a child with a certain class
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201
You can use the find function:
if($('#popup').find('p.filled-text').length !== 0)
// Do Stu...
tmux: How to join two tmux windows into one, as panes?
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170
Actually I found the way to do that. Suppose the two windows are number 1 and 2. Use
join-pane ...
BigDecimal - to use new or valueOf
...an be somewhat unpredictable. One might assume that writing new BigDecimal(0.1) in Java creates a BigDecimal which is exactly equal to 0.1 (an unscaled value of 1, with a scale of 1), but it is actually equal to 0.1000000000000000055511151231257827021181583404541015625. This is because 0.1 cannot be...
Why is AJAX returning HTTP status code 0?
...application) the browser just stops uploading and returns status codes of 0 . Why does this happen?
20 Answers
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Can I store the .git folder outside the files I want tracked?
...ckup and Git will pick them up on each command. That will only comfortably allow you to work in a single repository per shell, though.
I’d rather suggest symlinking the .git directory to somewhere else, or creating a symlink to the .git directory from your main backup directory.
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uwsgi invalid request block size
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208
I aslo ran into same issue while following some tutorial.
The problem was that I set the option...
How do I retrieve the number of columns in a Pandas data frame?
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edited Nov 30 '13 at 7:22
answered Nov 30 '13 at 7:11
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