JavascriptMath. random () random number function _ basic knowledge

Returns the formula of a random number in the specified range (between m-n). For details, refer. Random Function syntax
Math. random ();

Random Function Parameters
No Parameter
Random Function Return Value
Returns a pseudo-random number between 0 and 1, which may be 0, but always less than 1)

Random Function example
Document. write (Math. random ());

Returns a random number.
Document. write (Math. random () * (20-10) + 10 );

Returns a random number of 10-20.
Document. write (Math. random () * (n-m) + m );

Returns the formula of a random number (between m-n) in the specified range.