Do functions in JavaScript necessarily return a value ?

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Do functions in JavaScript necessarily return a value ?



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2) Consider the following code snippet

function printprops(o)
{
for(var p in o)
console.log(p + ": " + o[p] + "\n");
}

What will the above code snippet result ?

3) When does the function name become optional in JavaScript?

4) 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 ?

5) Consider the following code snippet :

var string2Num=parseInt("123xyz");

The result for the above code snippet would be :

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