Can a function be empty in JavaScript?

The function in question is called empty() . Our JavaScript function is far more precise about what kinds of data can be considered empty: undefined or null. a zero-length string.

Why is my JavaScript function undefined?

This is a common JavaScript error that happens when you try to call a function before it is defined. You get this error when you try to execute a function that is uninitialized or improperly initialized . It means that the expression did not return a function object.

Can JavaScript functions have no name?

JavaScript allows us to define a function without any name. This unnamed function is called anonymous function. Anonymous function must be assigned to a variable.

What does an empty function return?

The empty() function checks whether a variable is empty or not. This function returns false if the variable exists and is not empty, otherwise it returns true. The following values evaluates to empty: 0. 0.0.

When an empty statement is encountered a JavaScript interpreter?

Discussion Forum

What is the purpose of anonymous functions?

Anonymous functions, also known as closures , allow the creation of functions which have no specified name. They are most useful as the value of callable parameters, but they have many other uses. Anonymous functions are implemented using the Closure class.

Is JavaScript empty?

Use the === Operator to Check if the String Is Empty in JavaScript. We can use the strict equality operator ( === ) to check whether a string is empty or not. The comparison data===”” will only return true if the data type of the value is a string, and it is also empty; otherwise, return false .