Predict the output of the following javascript code

(function(){
 setTimeout(()=> console.log(1),2000);
 console.log(2);
 setTimeout(()=> console.log(3),0);
 console.log(4);
})();

 

 

 

 

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Quiz Explanation

Console logs 2 first, then despite a 0ms delay, 4 appears before 3 due to setTimeout executing in the Web API. Finally, after a 2000ms delay, 1 is printed