Math.random() built-in function. It returns a floating-point random number between 0 (inclusive) and 1 (exclusive). This number behaves like a seed, it can be scaled to our desired scale.
Create a random number between 1 and 10
Let's us now scale the random number to get number as we desire. To get a number up to 'n' just multiply the output of
Math.random() to 'n'.
Since returned number from
Math.random() is from 0-1 so when the output is multiplied with 'n' then the number will range from 0 to 'n' (not inclusive).
Now add 1 to the number and range becomes 1 to 'n+1' (not inclusive). Since the number is float we use
Math.floor() to get lower bound of the number, and now number ranges from 0 to n. put
n = 10 to get the desired result.
Using some manipulations you can also get a random number in the range.
You have the max and min of the range. Since
Math.random()range from [0, 1)
Math.random() * (max - min + 1)range from [0, max - min + 1)
Math.random() * (max - min + 1) + minrange from [min, max + 1)
Math.floor(Math.random() * (max - min + 1))range from [0, max]
Generate a random color or a random background color for your webpage using the above concept.
Generate a random number from 0 to 9, six times and add these to a string starting with "#" symbol. It will be your random color to use (Hex color).