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154

Javascript roundoff number to nearest 0.5

rated 0 times [ 159] [ 5] / answers: 1 / hits: 77886 / 13 Years ago, thu, may 26, 2011, 12:00:00

Can someone give me an idea how can i round off a number to the nearest 0.5.

I have to scale elements in a web page according to screen resolution and for that i can only assign font size in pts to 1, 1.5 or 2 and onwards etc.

If i round off it rounds either to 1 decimal place or none.
How can i accomplish this job?

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answered 13 Years ago felixa · Accepted Answer

Write your own function that multiplies by 2, rounds, then divides by 2, e.g.

function roundHalf(num) {

    return Math.round(num*2)/2;

}