Which of the following is a way to define an anonymous function in JavaScript?

Question

Options

• Avar x = function() { ... };
• Bfunction x() { ... }
• Cfunction: x() { ... }
• Dvar x = new Function() { ... };

• A
  95% (20)
• B
  5% (1)

Explanation

Option A is correct because it assigns a function expression to a variable - the function itself has no name, making it anonymous. Option B defines a named function declaration (x is the name, so it's not anonymous). Option C uses invalid syntax - JavaScript has no function: keyword, making it a red herring. Option D is nearly valid syntax but wrong: new Function() takes a string argument like new Function('return 1'), not a code block with { }.

Memory tip: An anonymous function has no name after the function keyword - in option A, function() has nothing between function and (), which is the hallmark of anonymous. If you see a name there, it's named.

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