JAVASCRIPT

math ceil

// There are many ways of rounding...
Math.ceil(5.5) // Answer 6, rounds up.
Math.round(5.5) // Answer 6, rounds to the closest whole number.
Math.floor(5.5) // Answer 5, rounds down.

// ceil is short for ceiling(up), floor is down...

Math.ceil

//The Math.ceil() function always rounds a
//number up to the next largest integer.

//Note: Math.ceil(null) returns integer 0
//and does not give a NaN error.

Math.ceil(.95);    // 1
Math.ceil(4);      // 4
Math.ceil(7.004);  // 8
Math.ceil(-0.95);  // -0
Math.ceil(-4);     // -4
Math.ceil(-7.004); // -7

How does Math.ceil work

Math.ceil(x); //This equals the next whole number after x. X must be a double.

//Example use:
x = Math.ceil(x);
//Now x is equal to x rounded up.

math.ceil

Math.ceil(.95);    // 1
Math.ceil(4);      // 4
Math.ceil(7.004);  // 8
Math.ceil(-0.95);  // -0
Math.ceil(-4);     // -4
Math.ceil(-7.004); // -7

Math.ceil

console.log(Math.ceil(5.95)); // output: 6

console.log(Math.ceil(-11.23)); // output: -11

console.log(Math.ceil(9.78)); // output: 10