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Function Expression vs Function Declaration in JavaScript?
Function Declaration
The “function” keyword declares a function in JavaScript. To define a function in JavaScript use the “function” keyword, followed by a unique function name, a list of parameters (that might be empty), and a statement block surrounded by curly braces.
Here’s an example −
function sayHello(name, age) { document.write (name + " is " + age + " years old."); }
Function Expression
Function Expression should not start with the keyword “function”. Functions defined can be named or anonymous.
Here are the examples −
//anonymous function expression var a = function() { return 5; }
Or
//named function expression var a = function bar() { return 5; }
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