大约有 3,285 项符合查询结果（耗时：0.0239秒） [XML]
Lists: Count vs Count() [duplicate]
...method on the list object, it just returns the value of a field so is very fast. As it is a small method it is very likely to be inlined by the compiler (or runtime), they may then allow other optimization to be done by the compiler.
myList.Count() is calling an extension method (introduced by LI...
Checking if jquery is loaded using Javascript
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You can do this fast on the console-tab when inspecting your webpage.
E.g:
$ === jQuery
If it returns true it means it's loaded.
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How to jump to top of browser page
... instead of a snap to the top:
$('html, body').animate({ scrollTop: 0 }, 'fast');
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How to make PowerShell tab completion work like Bash
...he key. I strongly prefer the actual behaviour, I want the line writted as fast as possible. Finally don't forget the wildcard expansion, for example: bu*h[Tab] automatically completes to buildHouse.bat
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How to remove all listeners in an element? [duplicate]
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I think that the fastest way to do this is to just clone the node, which will remove all event listeners:
var old_element = document.getElementById("btn");
var new_element = old_element.cloneNode(true);
old_element.parentNode.replaceChild(ne...
Dump Mongo Collection into JSON format
... collection. This utility uses the native libmongoclient and is likely the fastest method.
mongoexport -d <database> -c <collection_name>
Also helpful:
-o: write the output to file, otherwise standard output is used (docs)
--jsonArray: generates a valid json document, instead of one...
How to update column with null value
...l, and just use the first two lines of your show code, it will run just as fast, probably faster. Rows that already have null, simply won't be written back to DB, because there is no change.
– ToolmakerSteve
Aug 31 at 23:35
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How to check 'undefined' value in jQuery
...y special method, since JavaScript has a typeof operator, which is simple, fast and cross-platform:
if (typeof value === "undefined") {
// ...
}
It returns a string indicating the type of the variable or other unevaluated operand. The main advantage of this method, compared to if (value === u...
Center image in div horizontally [duplicate]
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Yup, sorry, my bad. Typed a little fast. Thanks.
– Maxime Fabre
Apr 2 '12 at 17:09
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jQuery hasClass() - check for more than one class
...n this in jsperf for Chrome 21.0.1180 and the is() method is now about 20% faster. But the hasClass() seems more readable.
– Danyal Aytekin
Sep 27 '12 at 12:27
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