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var a = function() {
function someSetup(){
var setup = 'done';
}
function actualWork() {
alert('Worky-worky');
}
someSetup();
return actualWork;
}();
why the above code doesn’t alert Worky-worky?it shows undefined.thank you
Because you only return the function, not call it.
Perform
a();after this code execution, this will call the function that’s returned by anonymous self-executing function, thusactualWork.