![]() ![]() If the string begins with "0", the radix is 8 (octal). If the string begins with "0x", the radix is 16 (hexadecimal) If the radix parameter is omitted, JavaScript assumes the following: The radix parameter is used to specify which numeral system to be used, for example, a radix of 16 (hexadecimal) indicates that the number in the string should be parsed from a hexadecimal number to a decimal number. ![]() To ensure that the string is evaluated the way you want, specify the "radix" parameter, and make sure that the first character in the string can be evaluated as a number.įrom the W3Schools article on parseInt() function: will not represent the same values as they would in decimal system. In Octal, 08, 09 are not valid numbers, and 010, 011, etc. If your string begins with a zero, the number will be evaluated in octal instead of decimal system. However use of the function without understanding the details can lead to unexpected results. It parses a string and returns an integer. ![]() The parseInt() function can be used for this purpose. If you need to do calculations with the data after retrieving it, the string data must be converted to integers or floating point type. A string must be converted to a number to use it in calculations.įor example, when working with SCORM elearning software, scoring and performance data is stored in a Learning Management System as strings. This can cause problems if you think a particular value is a number when in fact it is a string. Javascript is a loosely typed language, which means it is possible to define a variable without specifying what type of data it holds ( string, integer, floating point, etc.). ![]()
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