Salesforce JavaScript Developer Practice Exam

What value does the statement '10 == "10"' evaluate to?

1. true

2. false

3. undefined

4. ReferenceError

The correct answer is: true

The statement '10 == "10"' evaluates to true because the equality operator (==) in JavaScript performs type coercion. In this case, JavaScript converts the string "10" into a number before comparing it to the number 10. After this conversion, both sides of the comparison become the number 10, leading to the equality check yielding true. Type coercion is a fundamental concept in JavaScript, where the language automatically converts values to the necessary type to perform the operation. In contrast, if the strict equality operator (===) were used, the comparison would check both value and type without conversion, resulting in a different outcome.