JavaScript If statement

The javascript if statement is used for conditional branching. It allows the code to make a decision based on a condition and execute different parts of the code depending on whether the condition is true or false.

Here is an example of using an if statement in JavaScript:

let num = 5;
if (num > 0) {
   console.log("Number is positive");
}

In this example, the if statement checks whether the value of num is greater than 0. If the condition is true, the code inside the curly braces will be executed, which in this case is to print “Number is positive” to the console. If the condition is false, the code inside the curly braces will be skipped.

We can also add an else block to execute a different block of code if the condition is false:

let num = -3;
if (num > 0) {
   console.log("Number is positive");
} else {
   console.log("Number is negative");
}

In this example, if the condition is true, the code inside the first block will be executed, otherwise the code inside the else block will be executed. In this case, since the value of num is less than 0, the output will be “Number is negative”.