JavaScript Type Coercion: Fun Quiz Question

Are you ready to test your knowledge of JavaScript type coercion? Type coercion is the process of converting one data type to another. It can lead to unexpected results if you’re not familiar with how JavaScript handles different data types. Take this fun quiz to see how well you understand type coercion in JavaScript!

Quiz Question:

What will be the result of the following expression in JavaScript?

1 + “2”

12

3

NaN

Submit

function checkAnswer() {
var userAnswer = document.querySelector(‘input[name=”answer”]:checked’).value;
if (userAnswer === “12”) {
document.getElementById(“result”).innerHTML = “Correct! In JavaScript, when a string is concatenated with a number, the number is implicitly converted to a string, resulting in ’12’.”;
} else {
document.getElementById(“result”).innerHTML = “Incorrect. The correct answer is 12. In JavaScript, when a string is concatenated with a number, the number is implicitly converted to a string, resulting in ’12’.”;
}
}