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How to add float numbers using JavaScript ?

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Given two or more numbers the task is to get the float addition in the desired format with the help of JavaScript.

There are two methods to solve this problem which are discussed below:

 Approach 1: Using parseFloat() and toFixed() method

Example: This example implements the above approach. 

Javascript

let val = parseFloat('2.3') + parseFloat('2.4');
console.log("2.3 + 2.4 = " + val);
 
function gfg_Run() {
    console.log("2.3 + 2.4 = "
        + (parseFloat('2.3') +
            parseFloat('2.4')).toFixed(2));
}
gfg_Run()

                    

Output
2.3 + 2.4 = 4.699999999999999
2.3 + 2.4 = 4.70

Approach 2: Using parseFloat() and Math.round() method

Example: This example implements the above approach. 

Javascript

let val = parseFloat('2.3') + parseFloat('2.4');
console.log("2.3 + 2.4 = " + val);
 
function gfg_Run() {
    console.log("2.3 + 2.4 = " +
        Math.round((parseFloat('2.3')
            + parseFloat('2.4')) * 100) / 100);
}
gfg_Run()

                    

Output
2.3 + 2.4 = 4.699999999999999
2.3 + 2.4 = 4.7


Last Updated : 08 Jan, 2024
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