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How do you check if a variable is an array in JavaScript? [duplicate]
...=== Array
Some other ways are:
Array.isArray(variable)
Update May 23, 2019 using Chrome 75, shout out to @AnduAndrici for having me revisit this with his question
This last one is, in my opinion the ugliest, and it is one of the slowest fastest. Running about 1/5 the speed as the first example....
Splitting a string into chunks of a certain size
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edited Nov 20 '14 at 5:05
answered Sep 20 '09 at 11:07
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Why Func instead of Predicate?
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answered Mar 20 '09 at 9:47
Jb EvainJb Evain
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Accessing elements of Python dictionary by index
..., 'Mexican':10, 'Chinese':5},
'Grapes':{'Arabian':'25','Indian':'20'} }
print myDict['Apple']['American']
as others suggested. If instead the questions is, you don't know whether 'Apple' as a fruit and 'American' as a type of 'Apple' exist when you read an arbitrary file into your dict...
Archiving project in Xcode incorrectly creates multi-application bundle
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answered Mar 5 '11 at 20:40
Jared FriedmanJared Friedman
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Are HTML comments inside script tags a best practice? [closed]
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answered Apr 30 '09 at 20:23
NoldorinNoldorin
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Integer division: How do you produce a double?
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answered Jun 29 '10 at 20:51
Matthew FlaschenMatthew Flaschen
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Set a default parameter value for a JavaScript function
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From ES6/ES2015, default parameters are in the language specification.
function read_file(file, delete_after = false) {
// Code
}
just works.
Reference: Default Parameters - MDN
Default function parameters allow formal paramet...
How to get child element by class name?
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edited Aug 28 '12 at 20:29
answered Aug 28 '12 at 20:10
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Is there any Rails function to check if a partial exists?
...rce apidock)
– maček
Dec 11 '12 at 20:47
1
If the partial is in the same folder as the current v...