What will be the output of the following JavaScript code? <pre class = "prettyprint"><xmp> let a = 12; { var a = 12; console.log(a); } </xmp></pre>

What will be the output of the following JavaScript code? <pre cla

MCQ Single Best Answer Easy

QWhat will be the output of the following JavaScript code?


let a = 12;
{
    var a = 12;
    console.log(a);
}

ID: #20276 Block scope in JavaScript 78 views

Question Info

#20276Q ID

EasyDifficulty

Block scope in JavaScriptTopic

Your Answer

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Correct Answer: Option D


    var a = 12;
        ^

SyntaxError: Identifier 'a' has already been declared

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