Binary and octal literals
The following table summarizes the methods of Number. The built-in Math object has properties and methods for mathematical constants and functions. For example, the Math object's PI property has the value of pi 3. Similarly, standard mathematical functions are methods of Math. These include trigonometric, logarithmic, exponential, and other functions. For example, if you want to use the trigonometric function sine, you would write. Unlike many other objects, you never create a Math object of your own.
The Date object methods for handling dates and times fall into these broad categories:. With the "get" and "set" methods you can get and set seconds, minutes, hours, day of the month, day of the week, months, and years separately. There is a getDay method that returns the day of the week, but no corresponding setDay method, because the day of the week is set automatically.
These methods use integers to represent these values as follows:. The getTime and setTime methods are useful for comparing dates. The getTime method returns the number of milliseconds since January 1, , Hexadecimal numbers, which pack so neatly into bytes, are also of special interest.
But why restrict ourselves to radices 10, 16, 8 and 2? A bit of Googling found this suggestion from Andrew Koenig on a Python mail list archive:. I am personally partial to allowing an optional radix in decimal followed by the letter r at the beginning of a literal, so 19, 8r23, and 16r13 would all represent the same value. You did notice the Latin Capital Letter O didn't you?
Word Aligned sweating the small stuff. Each one specifies a two-byte character in the UTF encoding. For codepoints between 0 and FFFF, the digits are identical to the codepoint. Higher codepoints require two escape sequences representing the surrogate pair used to encode the character; the surrogate pair is distinct from the codepoint.
These statements with "no LineTerminator here" rules are:. Get the latest and greatest from MDN delivered straight to your inbox.
Please check your inbox or your spam filter for an email from us. The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https: Binary numeric literals 0b 41 41 12 25 28 Yes?
Octal numeric literals 0o 41 41 12 25 28 Yes? Shorthand notation for object literals 43 43 12 33 30? Template literals 41 41 12 34 28? Document Tags and Contributors Tags: Contributors to this page: Erutuon , fscholz , mistoken , nmve , kdex , lewisje , fasttime , Pointy , stevemao , michaelficarra , merih , Hywan , akinjide , KiraAndMaxim , realityking , jpmedley , RogerPoon , shvaikalesh , zzmp , williampower.