Do all functions need a return statement JavaScript?

Do all functions have a return statement?

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.

Can you have a function without a return statement?

If no return statement appears in a function definition, control automatically returns to the calling function after the last statement of the called function is executed. In this case, the return value of the called function is undefined.

Do all functions need to end with a return statement?

Regardless of how long and complex your functions are, any function without an explicit return statement, or one with a return statement without a return value, will return None .

Do functions need to have a return?

To return a value other than the default, a function must have a return statement that specifies the value to return. A function without a return statement will return a default value. … For all other functions, the default return value is undefined .

Can a void method have a return statement?

Any method declared void doesn’t return a value. It does not need to contain a return statement, but it may do so. … The data type of the return value must match the method’s declared return type; you can’t return an integer value from a method declared to return a boolean.

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Can a function return a struct?

You can return a structure from a function (or use the = operator) without any problems. It’s a well-defined part of the language. The only problem with struct b = a is that you didn’t provide a complete type.

What is the default return value for a function that does not contain a return statement?

A function without an explicit return statement returns None . In the case of no arguments and no return value, the definition is very simple.

Does return end a function Python?

A return statement effectively ends a function; that is, when the Python interpreter executes a function’s instructions and reaches the return , it will exit the function at that point.

Does a function have to return a value Python?

All Python functions return the value None unless there is an explicit return statement with a value other than None. Consider the following common mistake made by beginning Python programmers.

Can you have two return statements in a function Python?

A function can have multiple return statements. When any of them is executed, the function terminates. A function can return multiple types of values. Python function can return multiple values in a single return statement.

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