大约有 15,461 项符合查询结果(耗时:0.0272秒) [XML]

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Is there an “exists” function for jQuery?

...ata functions. I do see your point though and, for what it's worth, I just test for length > 0 anyways. – Matthew Crumley Jan 16 '09 at 5:42 40 ...
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How to use getJSON, sending data with post method?

..._GET['callback']."(".json_encode($myarr).");"); I made some cross-domain tests and it seems to work. Still need more testing though. share | improve this answer | follow ...
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What does = +_ mean in JavaScript

... it will evaluate to NaN. It is also noted that unary plus is the fastest and preferred way of converting something into a number share | improve this answer | follow ...
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How to dynamically compose an OR query filter in Django?

...jects.all(). Easy to mitigate by returning Article.objects.none() for that test though. – Wil Oct 1 '18 at 14:33 2 ...
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Swift days between two NSDates

... end).day! } The naming feels more Swifty, it's one line, and using the latest dateComponents() method. share | improve this answer | follow | ...
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How can I check if a scrollbar is visible?

...r(); // returns true if there's a `vertical` scrollbar, false otherwise.. tested working on Firefox, Chrome, IE6,7,8 but not working properly on body tag selector demo Edit I found out that when you have horizontal scrollbar that causes vertical scrollbar to appear, this function does not work.......
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Convert string to variable name in JavaScript

... @goggin You should regex-test the argument to make sure that it's a valid name. Just evaling the argument without checking it first is ridiculously insecure. – Šime Vidas Apr 10 '11 at 18:54 ...
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Generic type conversion FROM string

...ms to work for me: public object Get( string _toparse, Type _t ) { // Test for Nullable<T> and return the base type instead: Type undertype = Nullable.GetUnderlyingType(_t); Type basetype = undertype == null ? _t : undertype; return Convert.ChangeType(_toparse, basetype); } p...
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Display an array in a readable/hierarchical format

...$v) echo $v, PHP_EOL; UPDATE: A more sophisticated solution would be: $test = [ 'key1' => 'val1', 'key2' => 'val2', 'key3' => [ 'subkey1' => 'subval1', 'subkey2' => 'subval2', 'subkey3' => [ 'subsubkey1' => 'subsubval1', ...
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How to format a float in javascript?

...iers. Both kkyy and Christoph's solutions are wrong unfortunately. Please test your code for number 551.175 with 2 decimal places - it will round to 551.17 while it should be 551.18 ! But if you test for ex. 451.175 it will be ok - 451.18. So it's difficult to spot this error at a first glance. Th...