大约有 42,000 项符合查询结果（耗时：0.0640秒） [XML]
Get person's age in Ruby
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edited Jan 27 at 23:19
answered Mar 1 '10 at 17:43
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How to remove a package in sublime text 2
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edited Dec 11 '14 at 19:14
JasonMArcher
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How to get the data-id attribute?
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edited Oct 16 '17 at 9:22
Kaushik Thanki
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Select elements by attribute
...')) {
// attribute exists
} else {
// attribute does not exist
}
EDIT:
The above will fall into the else-branch when myattr exists but is an empty string or "0". If that's a problem you should explicitly test on undefined:
if ($('#A').attr('myattr') !== undefined) {
// attribute exis...
What is the best way to tell if a character is a letter or number in Java without using regexes?
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edited Mar 21 '18 at 22:37
answered Oct 28 '10 at 23:06
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AngularJS Folder Structure [closed]
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edited Mar 2 '16 at 7:35
Wand Maker
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How can I check for an empty/undefined/null string in JavaScript?
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edited Jun 2 '18 at 0:29
user5779136
answered Sep 30 '08 at 17:20
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How to get the first element of the List or Set? [duplicate]
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edited Jul 24 '15 at 21:57
Stephan
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How to remove all line breaks from a string
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edited Sep 2 '13 at 11:55
answered May 29 '12 at 19:18
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How do I write a bash script to restart a process if it dies?
... myserver start at a certain init level and be respawned automatically.
Edit.
Let me add some information on why not to use PID files. While they are very popular; they are also very flawed and there's no reason why you wouldn't just do it the correct way.
Consider this:
PID recycling (killi...