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What does the !! (double exclamation mark) operator do in JavaScript ...
Novice JavaScript developers need to know that the "not not" operator is using implicitly the original loose comparison method instead of the exact === or !== operators and also the hidden cast operation that is happening behind the scenes and I show it in the example I provide.
What does ${} (dollar sign and curly braces) mean in a string in ...
What does $ {} (dollar sign and curly braces) mean in a string in JavaScript? Asked 9 years, 8 months ago Modified 1 year, 11 months ago Viewed 424k times
Which equals operator (== vs ===) should be used in JavaScript ...
I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype.value.
How do you use the ? : (conditional) operator in JavaScript?
27 It's a little hard to google when all you have are symbols ;) The terms to use are "JavaScript conditional operator". If you see any more funny symbols in JavaScript, you should try looking up JavaScript's operators first: Mozilla Developer Center's list of operators. The one exception you're likely to encounter is the $ symbol.
What is the difference between != and !== operators in JavaScript?
What is the difference between the !== operator and the != operator in JavaScript? Does it behave similarly to the === operator where it compares both value and type?
What's the difference between & and && in JavaScript?
This operator is almost never used in JavaScript. Other programming languages (like C and Java) use it for performance reasons or to work with binary data. In JavaScript, it has questionable performance, and we rarely work with binary data. This operator expects two numbers and returns a number. In case they are not numbers, they are cast to ...
Difference between == and === in JavaScript - Stack Overflow
What is the difference between == and === in JavaScript? I have also seen != and !== operators. Are there more such operators?
What is the meaning of "$" sign in JavaScript - Stack Overflow
JavaScript allows upper- and lower-case letters (in a wide variety of scripts, not just English), numbers (but not at the first character), $, _, and others.¹ Prototype, jQuery, and most javascript libraries use the $ as the primary base object (or function).
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