What is the difference between function declarations and function expressions?
An example of an AI chatbot conversation about function declarations and expressions in JavaScript.
What is the difference between function declarations and function expressions in JavaScript?
Function declarations are defined using the 'function' keyword followed by a name, while function expressions can be anonymous and are assigned to variables.
Can you give me an example of each?
Sure! A function declaration looks like this: function myFunction() {}. A function expression would be: const myFunction = function() {}.
Are there any differences in how they are hoisted?
Yes, function declarations are hoisted completely, meaning you can call them before they are defined. Function expressions are not hoisted in the same way.
Which one should I use in my code?
It depends on your needs. Use function declarations for named functions that you want to call anywhere, and function expressions for callbacks or when you want to define a function inline.
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