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JavaScript Double Dollar Sign
(5 answers)
$ Variable (Dollar Sign) in Chrome?
(6 answers)
What is the difference between $ and $$?
(7 answers)
Closed 4 years ago.
What's the meaning of $$("a") in JavaScript?, Is that something relevant to jQuery?
Typed it into browser's console, it works.
In Chrome $$ is an alias for document.querySelectorAll. Learn more on the expressions page.
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Type conversion of Boolean to Number in JavaScript
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JavaScript Adding Booleans
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Closed 3 years ago.
The title is sort of self-explanatory, I couldn't find a similar question or explanation for this
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Using explicitly numbered repetition instead of question mark, star and plus
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Reference - What does this regex mean?
(1 answer)
Closed 4 years ago.
Is there any difference between the regular expressions:-
/^[1-9][0-9]+$/
and
/^[1-9]{1}[0-9]+$/
They both seem to give the same result. Which convention is better,because in many examples I can see the use of {1}, but feel it is quite useless, am I right?
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What does ## ("at at") mean in ES6 JavaScript?
(1 answer)
JS variable starting with "#"
(4 answers)
Closed 4 years ago.
When I look through the MDN docs I sometimes notice ##. For example the Set documentation has links to get Set[##species] and Set.prototype[##iterator]()
What does ## mean?
(Also how do you say it? "AT-AT" would make for a great Star Wars reference)
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window.window in JavaScript
(3 answers)
Why does global "window" object has multi-level access
(4 answers)
Closed 5 years ago.
It doesn't matter if you write window or window.window or window.window.window, it still works.
I wanted to know what is the logic behind this.
I also checked it will work for window * 144 and after 145 it won't.
Is this intended in the language?
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Negative lookbehind equivalent in JavaScript
(11 answers)
Closed 7 years ago.
I've seen a few answers that deal with this question but was unable to get them to work.
What is a regex that would match "LOGGED_IN" but not match "NOT_LOGGED_IN"?
^LOGGED_IN$ is first to come to mind