What can I use instead of return in JavaScript?

Is return necessary in JavaScript?

A function returns undefined by default. The use of return is therefore only necessary if you want to override the default behaviour. The Javascript community seem to dislike unnecessary verbose code. It might even be said to be a sport to make the code as short and compact as possible.

Do all functions need a return?

Answer. NO, a function does not always have to have an explicit return statement. If the function doesn’t need to provide any results to the calling point, then the return is not needed.

What is return () in JavaScript?

The return statement ends function execution and specifies a value to be returned to the function caller.

Is return the same as return true?

No. They are not the same. Returning false from a function returns the boolean false , where a void return will return undefined .

Does JavaScript return last statement?

No, a return statement is not necessary at the end of a void function (sorry for the C-terms there). … Including a return statement at the end of a void function for readability, should be fine.

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Should a function contain a return statement if it does not return a value?

A value-returning function should include a return statement, containing an expression. If an expression is not given on a return statement in a function declared with a non- void return type, the compiler issues a warning message. … For a function of return type void , a return statement is not strictly necessary.

What will be returned if f AB is called?

If a and b both are equal, then this function will return 0. In other case function f(a,b) will return positive integer and upon calling function g it will always return 1.

What is the difference between return and return value?

RETURN [ return-value ]. The return-value must be a character value, either a literal or an expression. … If the called procedure doesn’t return a value, then the value returned is either the empty string (“”) or, if an earlier procedure RUN statement in the same call stack returned a value, then that value is returned.

What is the difference between return and console log?

return is a statement that allows a function to output a value back to where it was called. console. log is a function that lets us inspect values for debugging purposes.

What is the difference in return () and return {}?

The difference is that returns (uint) is defining the function as having 1 return variable, which is a uint. Related, but separate, is the statement return simpleInt; , which is actually returning simpleInt from the function.

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