Differences between math. Round () and math. Floor () functions in Javascript

These three functions may be confusing for beginners. Now I am learning them and I will make a detailed record.

Math. Round () literally knows what it means. How can we get a number around a double or float number? The answer is rounding.

For example, doucument. write (math. the result of round (-5.3) is-5, and document. write (math. the result of round (-5.6) is-6. as for the positive integer, we will not explain it.

Math. Floor (), floor () indicates the floor, so this function is used to take an integer down.

For example, doucument. Write (math. Round (-5.3) and document. Write (math. Round (-5.6) are both-6

Math. Ceil () means to round up

For example, doucument. Write (math. Round (-5.3) and document. Write (math. Round (-5.6) are both-5