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How do I get the coordinates of a mouse click on a canvas element?

...t are not necessary anymore, as the clientX and clientY properties work in all current browsers. You might want to check out Patriques Answer for a simpler, more recent solution. Original Answer: As described in an article i found back then but exists no longer: var x; var y; if (e.pageX || e.page...
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gitignore does not ignore folder

...der. Inside the foo folder I have a bar folder. I would like to ignore all changes to all files inside my bar folder. I have this in my gitignore : ...
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How do I replace a character at a particular index in JavaScript?

... Note that it's generally not a good idea to extend base JavaScript classes. Use a plain utility function instead. – Ates Goral Sep 16 '09 at 5:40 ...
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How to check if an NSDictionary or NSMutableDictionary contains a key?

... Don't you want to use valueForKey, as that would call objectForKey if necessary? – Raffi Khatchadourian Dec 21 '11 at 0:39 6 ...
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What, exactly, is needed for “margin: 0 auto;” to work?

...ple's heads: The element must have a width that is not auto2 Note that all of these conditions must be true of the element being centered for it to work. 1 There is one exception to this: if your fixed or absolutely positioned element has left: 0; right: 0, it will center with auto margins. ...
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How to determine if Javascript array contains an object with an attribute that equals a given value?

... You don't need a flag if all you need to know is whether or not "something" is in, you can just check the value of the scan index with the size of array. For this to work the index var needs to be declared before the for statement of course. ...
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How to see which plugins are making Vim slow?

...:profile file * " At this point do slow actions :profile pause :noautocmd qall! (unlike quitting noautocmd is not really required, it just makes vim quit faster). Note: you won’t get information about functions there were deleted before vim quit. ...
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Android Gradle plugin 0.7.0: “duplicate files during packaging of APK”

... Don't know which one affects, but this is really helpful. – CopperCash Jul 4 '14 at 7:21 ...
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Can't connect to MySQL server error 111 [closed]

I installed mysql server on linux box IP = 192.168.1.100 but when i try to connect to this IP it alway error(111). but use localhost and 127.0.0.1 is OK. ...
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How to use > in an xargs command?

...2k because when you don't use -0, xargs will take your filenames and break all the spaces, quotes and backslashes in them. You should just forget about xargs as a tool. If you have lines, use a bash loop to iterate the lines: while read line; do <command> "$REPLY"; done < file-with-lines...