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How can I create a two dimensional array in JavaScript?
... The question is how to declare a two dimensional array. Which is what I was looking for and found this and following answers which fail to discern the difference between declare and initialize. There's also declaration with known length or unbounded, neither of which is discussed.
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Find mouse position relative to element
...e of them with the event attached to it, it can be confusing to understand what your browser sees as the parent. Here, you can specify which parent.
You take the mouse position, and then subtract it from the parent element's offset position.
var x = evt.pageX - $('#element').offset().left;
var y = e...
What is a reasonable length limit on person “Name” fields?
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Note that other organisations will have their own restrictions about what they will show on the documents they produce — for HM Passport Office the limit is 30 characters each for your forename and your surname, and for the DVLA the limit is 30 characters in total for your full name.
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Aspect Oriented Programming vs. Object-Oriented Programming
...*(*) ) && this(MyGraphicsClass) && within(com.company.*);
What does that mean? That means if a method is named "set*" (* means any name might follow after set), regardless of what the method returns (first asterisk) or what parameters it takes (third asterisk) and it is a method of ...
What underlies this JavaScript idiom: var self = this?
...elf exists and has the potential to cause errors if you are not careful.
What you call the variable doesn't particularly matter. var that = this; is fine, but there's nothing magic about the name.
Functions declared inside a context (e.g. callbacks, closures) will have access to the variables/fun...
Is a successor for TeX/LaTeX in sight? [closed]
...o create beautiful books there are some things you have to know, no matter what. And it is not hard to control position of images; TeX was designed to give you control over every point on the page, but to exercise that control you may have to go beyond the simple constructs (although I've never had ...
What are the use cases of Graph-based Databases (http://neo4j.org/)? [closed]
...rrent blub architecture, use a graph database, or CouchDB, or BigTable, or whatever fits your app and you think is cool. It might give you an advantage, and its fun to try new things.
Whatever you chose, try not to build the database engine yourself unless you really like building database engines....
CSS background opacity with rgba not working in IE 8
...ould be acceptable in 2003, but not in 2013. Either use -ms-filter for somewhat simulated support in old IE, or, better yet, just ignore it. People using IE8- deserve to be punished by not seeing border radius, transparent background etc.
– Evgeny
Jul 10 '13 at...
window.location.href and window.open () methods in JavaScript
What is the difference between window.location.href and window.open () methods in JavaScript?
6 Answers
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In pure functional languages, is there an algorithm to get the inverse function?
...completely automatically to derive an inverse function. (It also discusses what makes the problem hard when the functions are not polymorphic.)
What you get out in the case your function is invertible is the inverse (with a spurious input); in other cases, you get a function which tries to "merge" ...