![]() If the radix is not included, then it is 10 (decimal value) by default. The radix specifies the mathematical number system you want to use and the base of the number that will be returned – whether the number will be a base 2 (or binary), base 8 (or octal), base 10 (decimal), or base 16 (or hexadecimal) number. The string is the value that needs to be converted into a number. The parseInt() function takes two arguments: a string as the first argument and a radix as the second optional argument. The general syntax for the parseInt() function is the following: parseInt(string, radix) How to Convert a String into a Number Using the parseInt() Function You can check that for yourself by doing the following: let num = '7' To avoid any mistakes and double-check the data type of a value in JavaScript, use the typeof operator.Įarlier I mentioned that numbers enclosed in quotation marks are strings. How to Check the Data Type of a Value in JavaScript? Something to be aware of is that numbers shouldn't be surrounded by quotes - that will automatically make them a string. Let num = 477e-2 // equal to dividing 477 to 10 to the power of 2 (or 100) which results in 4.77 exponential - to represent small numbers Let num = 477e2 // equal to multiplying 477 to 10 to the power of 2 (or 100) which results in 47700 exponential - to represent large numbers The letters A - F are associated with the values 10 -15. After that, there can be a combination of hexadecimal digits ranging from 0 - 9 and letters ranging from A - F (or a - f). A hexadecimal number begins with a 0 followed by either an x or X. ![]() Hexadecimal numbers (also known as base 16 numbers).An octal number begins with a 0 followed by octal digits which range from 0 - 7. Octal numbers (also known as base 8 numbers).The number begins with a 0 followed by a b followed by an 8-bit number. Binary is a numerical system comprised of only two numbers: 0 and 1. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |