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2. Which equals operator (== vs ===) should be used in JavaScript...

   stackoverflow.com/questions/359494

   JavaScript has two sets of equality operators: === and !==, and their evil twins == and !=. The good ones work the way you would expect. The good ones work the way you would expect. If the two operands are of the same type and have the same value, then === produces true and !== produces false .

3. What is the purpose of the dollar sign in JavaScript?

   stackoverflow.com/questions/846585

   Unlike many similar languages, identifiers (such as functional and variable names) in Javascript can contain not only letters, numbers and underscores, but can also contain dollar signs. They are even allowed to start with a dollar sign, or consist only of a dollar sign and nothing else. Thus, $ is a valid function or variable name in Javascript.

4. What does the !! operator do in JavaScript? - Stack Overflow

   stackoverflow.com/questions/784929

   The exception for TypeScript? If myObject was an any, you're back in JavaScript's Wild West and can return it without !!, even if your return type is a Boolean. Keep in mind that these are JSX and TypeScript conventions, not ones inherent to JavaScript. But if you see strange 0s in your rendered JSX, think loose falsy management.

5. How do you use the ? : (conditional) operator in JavaScript?

   stackoverflow.com/questions/6259982

   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.

6. javascript - When should I use ?? (nullish coalescing) vs ||...

   stackoverflow.com/questions/61480993

   However, there are many instances where they behave the same. That is because in JavaScript every nullish value is also falsey (but not every falsey value is nullish). Using what we learned above we can create a few examples for different behavior:

7. What does ${} (dollar sign and curly braces) mean in a string in...

   stackoverflow.com/questions/35835362

   I haven't seen anything here or on MDN. I'm sure I'm just missing something. There's got to be some documentation on this somewhere.

8. How do I escape a single quote ( ' ) in JavaScript? [duplicate]

   stackoverflow.com/questions/16134910

   UPDATE: I want to give an updated answer to this question. First, let me state if you're attempting to accomplish what I have below, I recommend that you manage events by adding event listeners ins...

9. Difference between == and === in JavaScript - Stack Overflow

   stackoverflow.com/questions/523643

   JavaScript has both strict and type-converting equality comparison. For strict equality the objects being compared must have the same type and: Two strings are strictly equal when they have the same sequence of characters, same length, and same characters in corresponding positions.

10. How to use OR condition in a JavaScript IF statement?

    stackoverflow.com/questions/2363840

    In JavaScript, if you're looking for A or B, but not both, you'll need to do something similar to:

11. What does href expression <a href="javascript:;"></a> do?

    stackoverflow.com/questions/7755088

    Old thread but thought I'd just add that the reason developers use this construct is not to create a dead link, but because javascript URLs for some reason do not pass references to the active html element correctly. e.g. handler_function(this.id) works as onClick but not as a javascript URL.