What happens if I try to change the quantity variable to "12.99"? Will the result using parseInt()be the number 12.99? const quantity = "12.99" Īs you can see, the result is a rounded integer. We can use the quantity variable from earlier to convert that string into a number. For example, a radix of 2 would represent the binary system, while a radix of 10 represents the decimal system. This function takes in a string and an optional radix.Ī radix is a number between 2 and 36 which represents the base in a numeral system.
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console.log(Number("awesome")) How to convert a string to a number in JavaScript using the parseInt() functionĪnother way to convert a string into a number is to use the parseInt() function. If you tried to pass in a value that cannot be converted into a number, then the return value would be NaN (Not a Number). We can check that it is now a number by using the typeof operator again. We can convert quantity into a number using the Number function like this: Number(quantity)
If we used the typeof operator on quantity, then it will return the type of string. In this example, we have a string called quantity with the value of "12".
One way to convert a string into a number would be to use the Number() function.
Here's an Interactive Scrim of How to Convert a String to a Number in JavaScript: How to convert a string to a number in JavaScript using the Number() function In this article, I will show you 11 ways to convert a string into a number. There are many ways to convert a string into a number using JavaScript.
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