JS reference type Math Object JS learning Note 2015-7-3 (74th Day)

In ECMAScript, a common place, the math object, is provided for saving mathematical formulas and information.

1, the properties of the Math object;

2, Min () and Max () methods;

3, rounding method;

4. Random () method = = "The Math.random () method returns a random number greater than or equal to 0 less than 1.

Use Math.random () to randomly select a value from within an integer range:

Value = Math.floor (Math.random () * Total number of possible values + first possible value)

For example: var num = Math.floor (math.random () *9 + 2); Num may be a number from 2 to 10 (including 2 and 10);

JS reference type Math Object JS learning Note 2015-7-3 (74th Day)