What will happen if a return statement does not have an associated expression?

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What will happen if a return statement does not have an associated expression?



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2) Do functions in JavaScript necessarily return a value ?

3) Consider the following code snippet

function hypotenuse(a, b)
{
function square(x)
{
return x*x;
}
return Math.sqrt(square(a) + square(b));
}

What does the above code result?

4) What will happen if a return statement does not have an associated expression?

5) Consider the following code snippet :

function constfuncs()
{
var funcs = [];
for(var i = 0; i < 10; i++)
funcs[i] = function()
{
return i;
};
return funcs; }
var funcs = constfuncs();
funcs[5]()

What does the last statement return ?

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