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Arrays and Functions MCQs | Page 1 of 4
var count = [1,,3];
What is the observation made?
var a1 = [,,,]; var a2 = new Array(3); 0 in a1 0 in a2
if (!a[i]) continue ;
What is the observation made ?
var a = [1,2,3,4,5];
What is the possible output for the above code snippet ?
var a = ; a.unshift(1); a.unshift(22); a.shift(); a.unshift(3,[4,5]); a.shift(); a.shift(); a.shift();
passes each element of the array on which it is invoked to the function you specify, and returns an array containing the values returned by that function
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