Both are correct, but none of them are “best” per se, and there may be a reason the developer chose to use both approaches. Event Listeners (addEventListener and IE’s attachEvent) Earlier versions of Internet Explorer implement javascript differently from pretty much every other browser. With versions less than 9, you use the attachEvent[doc] method, like … Read more
EDIT (Jun 5 2019): While the idea that “TypeScript supports Map natively” is still true, since version 2.1 TypeScript supports something called Record. Unfortunately the first generic parameter (key type) is still not fully respected: even with a string type, something like peopleA[0] (a number) is still valid. EDIT (Apr 25 2016): The answer below is old and should not be considered the best answer. … Read more
Actually, invites are not for the server, but for the channel. Each channel in your server has it’s own Instant Invite link, and which ever channel you pull the link from is where the user will land on your server each time they try to access it. For example, if you send Glados an invite link … Read more
Use JavaScript objects as associative arrays. Associative Array: In simple words associative arrays use Strings instead of Integer numbers as index. Create an object with JavaScript allows you to add properties to objects by using the following syntax: An alternate syntax for the same is: If you can, also create key-to-value object maps with the following … Read more
This is an old post, but I thought I should provide an illustrated answer anyway. Use javascript’s object notation. Like so: And to access the values: or you can use javascript literal object notation, whereby the keys not require to be in quotes:
The strict equality operator (===) behaves identically to the abstract equality operator (==) except no type conversion is done, and the types must be the same to be considered equal. Reference: Javascript Tutorial: Comparison Operators The == operator will compare for equality after doing any necessary type conversions. The === operator will not do the conversion, so if two values are not the … Read more
This is a one-line shorthand for an if-else statement. It’s called the conditional operator.1 Here is an example of code that could be shortened with the conditional operator: This can be shortened with the ?: like so: Like all expressions, the conditional operator can also be used as a standalone statement with side-effects, though this is unusual outside of … Read more
I originally wrote this answer when TypeScript was still hot-off-the-presses. Five years later, this is an OK overview, but look at Lodewijk’s answer below for more depth 1000ft view… TypeScript is a superset of JavaScript which primarily provides optional static typing, classes and interfaces. One of the big benefits is to enable IDEs to provide a richer environment … Read more
Is my function of creating a cookie correct? How do I delete the cookie at the beginning of my program? is there a simple coding?
TL;DR Your best bets are usually a for-of loop (ES2015+ only; spec | MDN) – simple and async-friendly forEach (ES5+ only; spec | MDN) (or its relatives some and such) – not async-friendly (but see details) a simple old-fashioned for loop – async-friendly (rarely) for-in with safeguards – async-friendly Some quick “don’t”s: Don’t use for-in … Read more