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Javascript when to use prototypes
...ing that you have to worry about when using the library.
The problem with JavaScript is that naked constructor functions require the caller to remember to prefix them with new or otherwise they typically don't work. There is no good reason for this. jQuery gets it right by hiding that nonsense behi...
AngularJS: Service vs provider vs factory
...rvice is that that it’s instantiated with the ‘new’ keyword. For you JavaScript gurus this should give you a big hint into the nature of the code. For those of you with a limited background in JavaScript or for those who aren’t too familiar with what the ‘new’ keyword actually does, let...
Reverse of JSON.stringify?
...r to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others.". To me this says that JSON should only be used for language agnostic types/data. Therefore, your example (while very valid) only relates to JSON in it's association to JavaScript, a...
angular.service vs angular.factory
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@MrB, that's a normal JavaScript feature, not specific to Angular or this question's context.
– Om Shankar
Dec 10 '14 at 20:29
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Download a file by jQuery.Ajax
...luish is completely right about this, you can't do it through Ajax because JavaScript cannot save files directly to a user's computer (out of security concerns). Unfortunately pointing the main window's URL at your file download means you have little control over what the user experience is when a f...
Iterate over a Javascript associative array in sorted order
Let's say I have a Javascript associative array (a.k.a. hash, a.k.a. dictionary):
10 Answers
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if (key in object) or if(object.hasOwnProperty(key)
...while in does look in the prototype.
Taken from O'Reilly High Performance Javascript:
You can determine whether an object has an instance member with a
given name by using the hasOwnProperty() method and passing in the
name of the member. To determine whether an object has access to a
pro...
JavaScript curry: what are the practical applications?
...t:
I can't think of an instance where currying—by itself—is useful in JavaScript; it is a technique for converting function calls with multiple arguments into chains of function calls with a single argument for each call, but JavaScript supports multiple arguments in a single function call.
I...
window.onload vs $(document).ready()
What are the differences between JavaScript's window.onload and jQuery's $(document).ready() method?
16 Answers
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How to initialize an array's length in JavaScript?
Most of the tutorials that I've read on arrays in JavaScript (including w3schools and devguru ) suggest that you can initialize an array with a certain length by passing an integer to the Array constructor using the var test = new Array(4); syntax.
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