Code of the Day: Javascript Decimal To Fraction

/**
@function dec2frac
@returns string
@purpose Convert a decimal to a fraction
*/
function dec2frac(d) {
    var df = 1, top = 1, bot = 1;
    var limit = 1e5; //Increase the limit to get more precision.
 
    while (df != d && limit-- > 0) {
        if (df < d) {
            top += 1;
        }
        else {
            bot += 1;
            top = parseInt(d * bot, 10);
        }
        df = top / bot;
    }
    return top + '/' + bot;
}

/** @function dec2frac @returns string @purpose Convert a decimal to a fraction */ function dec2frac(d) { var df = 1, top = 1, bot = 1; var limit = 1e5; //Increase the limit to get more precision. while (df != d && limit-- > 0) { if (df < d) { top += 1; } else { bot += 1; top = parseInt(d * bot, 10); } df = top / bot; } return top + '/' + bot; }