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How to check with javascript if connection is local host?
...e in.
if (location.hostname === "localhost" || location.hostname === "127.0.0.1")
alert("It's a local server!");
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Returning first x items from array
...ray_slice returns a slice of an array
$sliced_array = array_slice($array, 0, 5)
is the code you want in your case to return the first five elements
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What's the difference between “groups” and “captures” in .NET regular expressions?
...ew value. Not .NET, which will keep this history and places it in Captures[0].
If we change your regex to look as follows:
MatchCollection matches = Regex.Matches("{Q}{R}{S}", @"(\{[A-Z]\})+");
you will notice that the first Group will have one Captures (the first group always being the whole m...
Keep only first n characters in a string?
...r JavaScript's String method substring
e.g.
'Hiya how are you'.substring(0,8);
Which returns the string starting at the first character and finishing before the 9th character - i.e. 'Hiya how'.
substring documentation
s...
Getting image dimensions without reading the entire file
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106
Your best bet as always is to find a well tested library. However, you said that is difficult, ...
What does ~~ (“double tilde”) do in Javascript?
...result is a number.
In other words, it yields:
function(x) {
if(x < 0) return Math.ceil(x);
else return Math.floor(x);
}
only if x is between -(231) and 231 - 1. Otherwise, overflow will occur and the number will "wrap around".
This may be considered useful to convert a function's string...
Center image horizontally within a div
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edited Jan 20 '18 at 23:10
TylerH
18.1k1212 gold badges6161 silver badges8080 bronze badges
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Is there a standard naming convention for git tags? [closed]
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170
Version 1.0.0 of Semantic Versioning, by Tom Preston-Werner of GitHub fame, had a sub-specificat...
Fast stable sorting algorithm implementation in javascript
I'm looking to sort an array of about 200-300 objects, sorting on a specific key and a given order (asc/desc). The order of results must be consistent and stable.
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How accurately should I store latitude and longitude?
...tor
decimal degrees distance
places
-------------------------------
0 1.0 111 km
1 0.1 11.1 km
2 0.01 1.11 km
3 0.001 111 m
4 0.0001 11.1 m
5 0.00001 1.11 m
6 0.000001 0.111 m
7 0.0000001 1.11 cm
8 ...