round off decimal using javascript

by 
(Math.round((16.185*Math.pow(10,2)).toFixed(1))/Math.pow(10,2)).toFixed(2);

If your value is, for example 16.199 normal round will return 16.2… but with this method youll get last 0 too, so you see 16.20! But keep in mind that the value will returned as string. If you want to use it for further operations, you have to parsefloat it 🙂

And now as function:

function trueRound(value, digits){
    return (Math.round((value*Math.pow(10,digits)).toFixed(digits-1))/Math.pow(10,digits)).toFixed(digits);
}

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