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Program Flow: Conditional Statements

Explore how to control JavaScript program flow using conditional statements like if, else if, and else. Understand how to execute code based on specific conditions to create dynamic and responsive web applications.

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Conditional statements are another way we can control the flow of our program. They allow us to execute code only under certain conditions that we define. Conditional statements are incredibly useful for defining exactly under what circumstances a block of code will run.

The if statement

Let’s start with an example. Given the variable temperature, we want to inform a user about weather conditions.

Node.js
var weather = function(temperature){
  console.log("The temperature outside is", temperature, "degrees fahrenheit.");
}
weather(60);

Let’s say we want to go beyond just giving the temperature value and want to inform users on whether or not they should wear a jacket. How could this be done programmatically?

We can ...