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Interview Question - Why JavaScript is baNaNa?
The question asks us to concatenate the characters 'b', 'a', 'n', 'a', 'n', 'a' to form the word 'banana' using JavaScript code.
Let's dive into the code and understand the solutions step by step.
Solution 1: String Concatenation We start with a straightforward approach by using the string concatenation operator (+) to combine the individual characters 'b', 'a', 'n', 'a', 'n', 'a'. We log the result using console.log(), which outputs the desired word 'banana'.
Solution 2: Tricky Use of Type Coercion Here, we introduce a trickier solution by exploiting JavaScript's type coercion. We attempt to concatenate the characters 'b', 'a', NaN (Not a Number), and 'a'. We explain that the expression +'a' coerces the string 'a' into a number, resulting in NaN. Adding NaN to the string 'ba' turns NaN into the string 'NaN', leading to 'baNaN'. Finally, we append the character 'a', giving us 'baNaNa'. We elaborate on the reasons behind this behavior, including type conversion and the unary plus operator.
Solution 3: Adding Case Insensitivity We enhance Solution 2 by applying the toLowerCase() function to the expression. This ensures that the output is in lowercase, resulting in the word 'banana' in all lowercase letters. Throughout the tutorial, we provide clear explanations, reasoning, and insights into JavaScript's behaviour.
Understanding these concepts will not only help you solve this specific interview question but also deepen your understanding of JavaScript's string manipulation and type coercion. Remember to like the video if you find it helpful and subscribe to our channel for more JavaScript interview question tutorials. Let's master JavaScript interview questions together!
Tags: #JavaScriptInterviewQuestions#JavaScriptInterviewPreparation#StringConcatenation#TypeCoercion #TypeConversion #CaseInsensitivity#InterviewTips#WebDevelopment#FrontendDevelopment#ProgrammingLearning#SoftwareEngineering
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