Number Methods - JavaScript Tutorial - w3Schools - Chapter 21 - English скачать в хорошем качестве

Number Methods - JavaScript Tutorial - w3Schools - Chapter 21 - English

These number methods can be used on all JavaScript numbers: Method Description toString() Returns a number as a string toExponetial() Returns a number written in exponential notation toFixed() Returns a number written with a number of decimals toPrecision() Returns a number written with a specified length ValueOf() Returns a number as a number Number() Returns a number converted from its argument. parseFloat() Parses its argument and returns a floating point number parseInt() Parses its argument and returns a whole number Number Object Methods These object methods belong to the Number object: Method Description Number.isInteger() Returns true if the argument is an integer Number.isSafeInteger() Returns true if the argument is a safe integer Number.parseFloat() Converts a string to a number Number.parseInt() Converts a string to a whole number Number Methods Cannot be Used on Variables The number methods above belong to the JavaScript Number Object. These methods can only be accessed like Number.isInteger(). Using X.isInteger() where X is a variable, will result in an error: TypeError X.isInteger is not a function.