What Will Be The Shift Output Of The Following Javascript Codep #100

What will be the shift() output of the following JavaScript code?</p> <pre><code class="language-javascript"> var a = []; a.unshift(1); a.unshift(22); a.shift(); a.unshift(3,[4,5]); a.shift(); a.shift(); var output = a.shift(); document.writeln(output); </code></pre>

This multiple choice question (MCQ) is related to the book/course gs gs106 Javascript. It can also be found in gs gs106 Lexical Structures - JavaScript Array and Related Methods - Quiz No.1.

 var a = []; a.unshift(1); a.unshift(22); a.shift(); a.unshift(3,[4,5]); a.shift(); a.shift(); var output = a.shift(); document.writeln(output);