JavaScript if then

The JavaScript “if-then” terminology is commonly used to describe the basic structure of the if statement, emphasizing that the code following the if condition is executed if the condition is true.

The term “JavaScript if then” is not a specific construct in JavaScript. However, “if-then” is a common way to describe the conditional execution in JavaScript using the if statement.

if (condition) {
  // code to be executed if the condition is true
}

The if keyword is followed by a pair of parentheses (), within which you specify the condition that will be evaluated. If the condition is true, the code inside the curly braces {} following the if statement will be executed.

Here’s an example that demonstrates the syntax:

JavaScript if then example

Simple example code.

var x = 5;

if (x > 0) {
  console.log("x is a positive number.");
}

Output:

The if statement in JavaScript allows you to test a condition and execute a block of code if the condition is true. It is often referred to as an “if-then” statement because the code inside the if block is executed if the condition is true.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.

OS: Windows 10

Code: HTML 5 Version