Question

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JavaScript: var functionName = function() {} vs function functionName() {}

AFAIK, there are two ways of creating functions:

function name()
{
}

and,

name = function()
{
}

I always use the second one as it seems much more intuitive.

What is the difference between these two ways of creating functions?

Answer 1

The difference is that first case function is defined at parse-time for a script block, whereas second case function is defined at run-time.

From here: var functionName = function() {} vs function functionName() {}