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JavaScript MCQs

Assuming that each code is called with: "var say = sayHello("Mary Jane");", which of the following is a closure?

function sayHello(name) { var text = 'Hello ' + name; return text; }

function sayHello(name) { alert( 'Hello ' + name) }

function sayHello(name) { var text = 'Hello ' + name; var sayAlert = function() { alert(text); } return sayAlert; }

function sayHello(name) { console.log('Hello ' + name;) }

Answer

Correct Answer: function sayHello(name) { var text = 'Hello ' + name; var sayAlert = function() { alert(text); } return sayAlert; }

Explanation:

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