JAVASCRIPT

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

javascript round to nearest 10

var rounded = Math.round(number / 10) * 10

javascript round to nearest integer

Math.round(num);

round up to nearest 0.5 javascript

// Simplest way
function roundHalf(num) {
    return Math.round(num*2)/2;
}