Check if number is negative in JavaScript
In this tutorial, you are given a number. Write a JavaScript program to check if the number is negative.
Solution
A number is negative if it is less than 0
. To check if given number is negative, we have to check if it is less than 0
. We can use comparison less than operator to check if given number is less than 0
.
Program
1. In the following program, you are given a number in n
. We shall check if n
is a negative number.
let n = -4;
if ( n < 0 ) {
console.log('negative number');
} else {
console.log('not a negative number');
}
We have used the condition with if-else statement.
2. Now, we shall take a positive number in n
and programmatically check if n
is negative or not.
let n = 6;
if ( n < 0 ) {
console.log('negative number');
} else {
console.log('not a negative number');
}