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JavaScript MCQs

Which of the following code snippets shows an alert for an empty string? var a = "";

If(a){ alert(‘This is empty string’);}

If(a == NUL){ alert(‘This is empty string’);}

If(!a){ alert(‘This is empty string’);}

If(a.empty){ alert(‘This is empty string’);}

Answer

Correct Answer: If(!a){ alert(‘This is empty string’);}

Explanation:

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