Similarly, in an OR expression ( expr1 || expr2), if expr1 is true, JavaScript won't evaluate expr2 because the overall result will be true regardless of expr2's value.Īnd that's a wrap, folks! We've explored the fascinating world of JavaScript if-else statements together, and you've gained valuable skills to tackle decision-making scenarios in your coding projects.įrom understanding conditional logic and mastering the if-else syntax to juggling multiple conditions with else-if chains and nested if-else blocks, you're now equipped to handle various real-world situations with ease. For example, in an AND expression ( expr1 & expr2), if expr1 is false, JavaScript won't evaluate expr2 because the overall result will be false regardless of expr2's value. When evaluating an expression with the '&' (AND) or '||' (OR) operators, JavaScript will stop evaluating as soon as the result is determined. C++ Tutorial for Beginners 1 - Installing CodeBlocks and Getting Started (For Absolute Beginners) ProgrammingKnowledge 1.64M subscribers Join Subscribe 2.2K Share 471K views 8 years ago C++. Short-circuit evaluation is a technique used by JavaScript (and other programming languages) to evaluate logical expressions. These examples are just the tip of the iceberg! As you work on more JavaScript projects, you'll find that if-else statements are incredibly versatile and can be used in countless ways to make your code smarter and more dynamic. We'll start with the 'if' keyword, which is like the code's way of saying, "Hey, if this condition is true, then do this thing!" Here's the basic structure: if (condition) `) ĬalculatePrice("medium", 3) // Output: The final price is $45 We'll walk through it step-by-step, and I promise you'll be an if-else pro in no time! The 'if' keyword: Let's dive into the syntax of the if-else statement in JavaScript. Breaking Down the If-Else Syntax: A Step-by-Step Guide For more information, read our affiliate disclosure. If you click an affiliate link and subsequently make a purchase, we will earn a small commission at no additional cost to you (you pay nothing extra). Important disclosure: we're proud affiliates of some tools mentioned in this guide.
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