How to use the Math.round() method In Javascript
The Math.rond() method will round up the passed floating string and returns its value after rounding it up. It also converts the type of string to number.
Syntax:
Math.round(stringVariable);
Example: The below code example uses the Math.round() method to convert a string into a number.
const str1 = "233";
const str2 = "23.33"
console.log("Before Conversion: ");
console.log("str1: ", str1, ", Type: ", typeof str1);
console.log("str2: ", str2, ", Type: ", typeof str2);
console.log("After Conversion: ");
console.log("str1: ", Math.round(str1), ", Type: ", typeof Math.round(str1));
console.log("str2: ", Math.round(str2), ", Type: ", typeof Math.round(str2));
Output
Before Conversion: str1: 233 , Type: string str2: 23.33 , Type: string After Conversion: str1: 233 , Type: number str2: 23 , Type: number
Convert a String to Number in JavaScript
Converting strings to numbers in JavaScript is a fundamental operation, crucial for various tasks like handling user inputs or data processing. By converting strings to numeric values, JavaScript enables developers to perform mathematical operations and comparisons accurately, enhancing the versatility and functionality of their applications.
Table of Content
- Using the ‘+’ operator
- Using the Number() constructor
- Using the parseInt() method
- Using the parseFloat() method
- Using the Math.floor() method
- Using the Math.ceil() method
- Using the Math.round() method