大约有 37,000 项符合查询结果(耗时:0.0403秒) [XML]

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Font size in CSS - % or em?

When setting the size of fonts in CSS, should I be using a percent value ( % ) or em ? Can you explain the advantage? 8 An...
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Is there a simple way to remove multiple spaces in a string?

Suppose this string: 29 Answers 29 ...
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Get position/offset of element relative to a parent container?

I'm used to working with jQuery. In my current project however I use zepto.js. Zepto doesn't provide a position() method like jQuery does. Zepto only comes with offset() . ...
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Code for a simple JavaScript countdown timer?

I want to use a simple countdown timer starting at 30 seconds from when the function is run and ending at 0. No milliseconds. How can it be coded? ...
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Number of elements in a javascript object

Is there a way to get (from somewhere) the number of elements in a javascript object?? (i.e. constant-time complexity). 6 A...
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How to find elements by class

I'm having trouble parsing HTML elements with "class" attribute using Beautifulsoup. The code looks like this 16 Answers ...
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How to get the primary IP address of the local machine on Linux and OS X? [closed]

I am looking for a command line solution that would return me the primary (first) IP address of the localhost, other than 127.0.0.1 ...
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node and Error: EMFILE, too many open files

...or you just want to understand where the leak is coming from. Follow this process. (e.g. graceful-fs isn't gonna fix your wagon if your issue is with sockets.) From My Blog Article: http://www.blakerobertson.com/devlog/2014/1/11/how-to-determine-whats-causing-error-connect-emfile-nodejs.html How To...
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Running shell command and capturing the output

...nt to write a function that will execute a shell command and return its output as a string , no matter, is it an error or success message. I just want to get the same result that I would have gotten with the command line. ...
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How can you list the matches of Vim's search?

... " put in your ~/.vimrc file " START search related configs and helps " " ignore case when searching set ignorecase " search as characters are entered, as you type in more characters, the search is refined ...