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JavaScript MCQs

Which of the following code snippets shows the correct way to detect an array that does not contain a specific value?

script>

var aVar = ["Banana", "Orange", "Apple", "Mango"];

var bVar = fruits.indexOf("Lichi")

if(bVar == 1){

//requirement

}

</script>

var aVar = ["Banana", "Orange", "Apple", "Mango"];

var bVar = fruits.valueOf("Lichi")

if(bVar == -1){

//requirement

}

</script>

var aVar = ["Banana", "Orange", "Apple", "Mango"];

var bVar = fruits.indexOf("Lichi")

if(bVar == -1){

//requirement

}

</script>

var aVar = ["Banana", "Orange", "Apple", "Mango"];

var bVar = fruits.valueOf("Lichi")

if(bVar == 1){

//requirement

}

</script>

Answer

Correct Answer:

<script>

var aVar = ["Banana", "Orange", "Apple", "Mango"];

var bVar = fruits.valueOf("Lichi")

if(bVar == -1){

//requirement

}

</script>

Explanation:

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