How to use if-else statement In Javascript
In this approach, we are using an if-else statement. in which whatever the condition will get satisfied and return true that code block will get executed and it will print the result in the console.
Example: It describes how we can find the given number is Positive, Negative, or Zero using an if-else statement
// Function for number checking
function NumberSignChecker(n) {
if (n > 0) {
console.log("Positive number");
} else if (n < 0) {
console.log("Negative number");
} else {
console.log("Zero");
}
}
// Variables holding values
let number1 = -5;
let number2 = 5;
let number3 = 0;
NumberSignChecker(number1); // Negative number
NumberSignChecker(number2); // Positive number
NumberSignChecker(number3); // Zero
Output
Negative number Positive number Zero
Time complexity: The time complexity of the above code is O(1), as it takes only one step to complete the operation.
Space complexity: The space complexity of the above code is O(1), as no extra space is required in order to complete the operation.
JavaScript Program to Check if a Given Integer is Positive, Negative, or Zero
In this article, we will discuss how we can determine whether the given number is Positive, Negative, or Zero. As we know if the number is less than 0 then it will be called a “Negative” number if it is greater than 0 then it will be called a “Positive” number. And if it doesn’t lie between them, then it will be 0.
Example:
Input: 10
Output: Positive number
Input: -12
Output: Negative number
Input: 0
Output: Zero
These are the following ways by which we can find out whether the number is Positive, Negative, or Zero:
Table of Content
- Using if-else statement
- Using ternary operator
- Using switch case
- Using Math.sign()
- Using bitwise operators