jquery - javascript: rounding a float UP to nearest .25 (or whatever...) -

all answers can find rounding nearest, not value... example

1.0005 => 1.25  (not 1.00) 1.9   => 2.00 2.10 => 2.25 2.59 => 2.75   etc. 

would seem pretty basic, has me stumped. has round up, not nearest, relatively easy thing do.

divide number 0.25 (or whatever fraction want round nearest to).

round nearest whole number.

multiply result 0.25.

math.ceil(1.0005 / 0.25) * 0.25 // 1.25  math.ceil(1.9 / 0.25) * 0.25 // 2  // etc. 

function tonearest(num, frac) {    return math.ceil(num / frac) * frac;  }    var o = document.getelementbyid("output");    o.innerhtml += "1.0005 => " + tonearest(1.0005, 0.25) + "<br>";  o.innerhtml += "1.9 => " + tonearest(1.9, 0.25) + "<br>";  o.innerhtml += "2.10 => " + tonearest(2.10, 0.25) + "<br>";  o.innerhtml += "2.59 => " + tonearest(2.59, 0.25);

<div id="output"></div>