This question already has answers here:
What is a mixin and why is it useful?
(18 answers)
Closed 6 years ago.
I am reading Reactjs documentation and came across mixins,but i dont understand mixins clearly.What are mixins and what are they used for?
Here is a link that will explain the concept in more detail.
https://javascriptweblog.wordpress.com/2011/05/31/a-fresh-look-at-javascript-mixins/
"Mixins are a great compromise, allowing entire functional units to be borrowed and accessed with minimal syntax and they play very well with prototypes. They offer the descriptive prowess of hierarchical inheritance without the brain-cracking issues associated with multi-tiered, single-rooted ancestry."
Related
This question already has answers here:
Is it possible to sandbox JavaScript running in the browser?
(15 answers)
Closed 3 years ago.
I'm aware similar questions have been asked before, but my use-case is a little different.
I'd like to create an educational app similar to LeetCode, CodeWars, etc. where users can type in their own functions to solve algorithms.
Right now, I'm focusing on JavaScript, so the code could be evaluated on client-side.
I want to know, what considerations should I take into account to use eval() and new Function() safely?
Or is there a better alternative?
Luckily you're not alone, and someone invented the wheel before you. You can check out NeilFraser/JS-Interpreter or sandbox.
There may be even better documented/implemented solutions that I'm not aware of, but it's a good start.
This question already has answers here:
What is the use case for var in ES6?
(5 answers)
Closed 6 years ago.
I am sorry if this is asked already but as I am introducing myself in ES6 on some tutorials, the instructor is saying that the var statement should be avoided. It just feels wrong but, is there any good reason for why should it be avoided?
var is on ES6 for legacy reasons. In theory, the let statement is better since it behaves more predictably on block scopes, but it won't work with more outdated interpreters. So, if you're coding with only ES6 in mind, go for let.
EDIT: Also, keep in mind that if you're new to JS, you'll likely find more learning material using var, so keep that in mind.
This question already has answers here:
What does "this" mean in jQuery? [duplicate]
(6 answers)
Closed 6 years ago.
Can any help how to use "this" inside a function for javascript, jquery, php. Because it is little confusing me how to use it. can we "this" inside iteration for loop. Please explain me with simple example.
Thanks you for time.
This is well documented in the official js documentation.
link
This article explains even better link
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
A good Javascript API reference documentation related to browsers and DOM
I've searched Google a bit & can't find a good reference for DOM/Javascript. What I would like is a page that shows lists of all the objects & if you click them you get to see which methods and attributes they have.
What one is your favorite?
Sort of like this one for actionscript:
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/class-summary.html
I use this: https://developer.mozilla.org/en-US/
I used this a while ago
http://www.java2s.com/Code/JavaScriptReference/CatalogJavaScriptReference.htm
This question already has an answer here:
Closed 11 years ago.
Possible Duplicate:
Create similar to fb:tag
In addition to my question:
Create similar to fb:tag
I would like to ask if someone knows how did Facebook create fb:tags using xmlns.
Just technologies and some short explanation.
I might find the answers that I am looking for the other question as well!
xmlns is used just to make html valid xhtml, the functionality wont work just by adding fb:.. imported javascript is the on which process these tags