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How do I convert a float number to a whole number in JavaScript?
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var intvalue = Math.floor( floatvalue );
var intvalue = Math.ceil( floatvalue );
var intvalue = Math.round( floatvalue );
// `Math.trunc` was added in ECMAScript 6
var intvalue = Math.trunc( floatvalue );
Math object reference
Examples
Posi...
Why should I use 'li' instead of 'div'?
...ook exactly the same so where is the functional advantage to creating an unordered list vs lining up divs?
15 Answers
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How to find if a native DLL file is compiled as x64 or x86?
I want to determine if a native assembly is complied as x64 or x86 from a managed code application ( C# ).
11 Answers
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What happens when a computer program runs?
I know the general theory but I can't fit in the details.
4 Answers
4
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How to find first element of array matching a boolean condition in JavaScript?
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Since ES6 there is the native find method for arrays; this stops enumerating the array once it finds the first match and returns the value.
const result = someArray.find(isNotNullNorUndefined);
Old answer:
I have to post an answer to stop these filter suggestions :-...
Should I size a textarea with CSS width / height or HTML cols / rows attributes?
Every time I develop a new form that includes a textarea I have the following dilemma when I need to specify its dimensions:
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How to test if a string is basically an integer in quotes using Ruby
...i?
!!(self =~ /\A[-+]?[0-9]+\z/)
end
end
An edited version according to comment from @wich:
class String
def is_i?
/\A[-+]?\d+\z/ === self
end
end
In case you only need to check positive numbers
if !/\A\d+\z/.match(string_to_check)
#Is not a positive number
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Java LinkedHashMap get first or last entry
I have used LinkedHashMap because it is important the order in which keys entered in the map.
14 Answers
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How do I redirect in expressjs while passing some context?
...here are a few ways of passing data around to different routes. The most correct answer is, of course, query strings. You'll need to ensure that the values are properly encodeURIComponent and decodeURIComponent.
app.get('/category', function(req, res) {
var string = encodeURIComponent('somethin...
When to favor ng-if vs. ng-show/ng-hide?
...:
ng-if will remove elements from DOM. This means that all your handlers or anything else attached to those elements will be lost. For example, if you bound a click handler to one of child elements, when ng-if evaluates to false, that element will be removed from DOM and your click handler will no...