how to round off to nearest integer in javascript code example

Example 1: js rounding

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

//You can do more things too...
Math.floor(5.57 * 10) / 10 //Answer 5.5, the number turns into 55.7, Then gets floored (55.0), Then gets divied, (5.5).

Example 2: round to nearest hundredth javascript

Math.round(X);           // round X to an integer
Math.round(10*X)/10;     // round X to tenths
Math.round(100*X)/100;   // round X to hundredths
Math.round(1000*X)/1000; // round X to thousandths

Example 3: rounding off in javascript

var avg=10.55;
console.log(Math.round(avg)); //Prints 11

Example 4: round to nearest decimal javascript

function round(value, precision) {
    var multiplier = Math.pow(10, precision || 0);
    return Math.round(value * multiplier) / multiplier;
}