Why does true+true+true===3 resolve to true in javascript [duplicate] - javascript

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Type conversion of Boolean to Number in JavaScript
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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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With and without the quantifier {1} has same effect? [duplicate]

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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'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.

What does ## mean in Javascript? [duplicate]

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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)

Why does `window.window.window` work in JavaScript? [duplicate]

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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?

PHP STRCHR equivalence to JavaScript [duplicate]

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Is there a function in javascript that is equivalent to strchr of php? Please help me. thank you.
You should try the indexOf method.

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