By using Number() constructor

In this method, we can use the Number() constructor which is a built-in function in JavaScript to convert a string into a number, including floats. It parses the argument as a float (or integer) and returns the result.

Example:

JavaScript
// Using Number() constructor to convert a string into a float
let stringNumber = "3.14";
let floatNumber = Number(stringNumber);
console.log(floatNumber); // Output: 3.14

Output
3.14




How to convert string into float in JavaScript?

In this article, we will convert a string into a float in Javascript. We can convert a string into a float in JavaScript by using some methods which are described below:

Similar Reads

Methods to Concert String into Float:

Table of Content Method 1: By using Type Conversion of JavaScriptMethod 2: By using parseFloat() MethodMethod 3: By using the eval() functionMethod 4: By using Number() constructor...

Method 1: By using Type Conversion of JavaScript

In this method, we will use the Type Conversion feature of JavaScript which will convert the string value into float....

Method 2: By using parseFloat() Method

In this method, we will use the parseFloat() method which is an inbuilt function in JavaScript that is used to accept the string and convert it into a floating point number. If the string does not contain a numeral value or If the first character of the string is not a Number then it returns NaN i.e, not a number....

Method 3: By using the eval() function

In this method, we will use the eval() method which is an inbuilt function in JavaScript that is used to evaluate the string return result. If the string contains a number then it converts it from string to number and then returns it and if contains other than the number it returns NaN i.e, not a number. Example: Below program demonstrates the above approach...

Method 4: By using Number() constructor

In this method, we can use the Number() constructor which is a built-in function in JavaScript to convert a string into a number, including floats. It parses the argument as a float (or integer) and returns the result....