![]() Hopefully, you've found these ways useful for your use-case. We've covered three different ways to convert a string to a number in JavaScript. However, Number() is useful for when you don't know the format of your input. If you know the format of your input, then it is recommended to use the parseInt() or parseFloat() functions instead. Here's an example of using Number(): const number1 = Number("123.456") That means if you pass it a string with a decimal point, it will convert it to a floating point number, and if not, it will convert it to an integer. You can think of the Number() function as a combination of the previous two functions, except it will always use the 10 radix. The third way to convert a string to a number is by using the Number() function. The following examples show how to make use of these functions. You can also make use of the parseint or parsefloat functions. The best way is to make use of the unary plus + operator or the Number global function. It will also return the same value without the radix parameter: const number = parseFloat("123.456") There are several ways you can convert JavaScript String to Number. Like with parseInt(), you can pass a radix, which is optional. The parseFloat() function is similar to parseInt(), except it will convert the string to a floating point number, basically a number with decimal points. ![]() Here's an example of how to use the parseInt() function: const number = parseInt("123", 10) Īs mentioned before, the radix is optional, so this also works: const number = parseInt("123") ![]() You can think of the radix as the base of the number system, the default being 10. This function accepts two parameters, the string to convert and the optional radix. The best way to convert a string to a number is to use the parseInt() function. Let's look at the three different ways you can convert strings to numbers. In this post, we'll learn how to convert strings to numbers in JavaScript. You can use the unary code+/code operator to hint to the interpreter that you want to use the string as a number. ![]()
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