Convert a negative number to positive in JavaScript
We can convert a negative number to a positive number in javascript by the methods described below.
Method 1: This is a general method in which we will first check whether the number is already positive or negative, if the number is negative then we will multiply the number with -1 to make it positive.
Syntax:
if (a < 0) {
a = a * -1;
}
Example: Below is the implementation of the above approach:
<script> // Javascript script // to convert negative number // to positive number // Function to convert // given number to // positive number function convert_positive(a) { // Check the number is negative if (a < 0) { // Multiply number with -1 // to make it positive a = a * -1; } // Return the positive number return a; } //Driver code var n = -10; var m = 5; // Call function n = convert_positive(n); // Print result document.write(n + "<br>"); // Call function m = convert_positive(m); // Print result document.write(m + "<br>"); </script> |
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Output:
10 5
Method 2: In this method we will use Math.abs() function to convert negative number to positive number.
Syntax:
Math.abs(value)
Example: Below is the implementation of the above approach:
<script> // Javascript script // to convert negative number // to positive number //Driver code var n = -30; var m = 15; // Using Math.abs() function n = Math.abs(n); // Print result document.write(n + "<br>"); // Using Math.abs() function m = Math.abs(m); // Print result document.write(m + "<br>"); </script> |
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Output:
30 15
