Difference between revisions of "Convert Seconds to Human Readable Duration"
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(Created page with "<pre class="brush:javascript"> /** * Convert to human readable time duration * @param seconds * @param desiredUnit {string} The desired unit. can be "W", "D", "H", "M"...") |
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Revision as of 01:23, 28 April 2015
/** * Convert to human readable time duration * @param seconds * @param desiredUnit {string} The desired unit. can be "W", "D", "H", "M" * unitCount {number} How many units to show * @returns { * value: {number} seconds input, * text: {string} "Time remaining text", * secondsLeft: {number} seconds left not showing in the text * } * (ignore the unit smaller than the 2nd unit. if desiredUnit = "D", unitCount = 2, 1d1m show "1d") */ toHumanReadableDuration: function (seconds, desiredUnit, unitCount) { var that = this; /** * Return a text with number and unit * @param number the number * @param unitName the unit text * @returns {*} */ var numberWithUnit = function (number, unitName) { return number + unitName; }; //If the duration is <=0, just return if (seconds <= 0) { return { value: seconds, text: numberWithUnit(0, "S"), secondsLeft: seconds }; } // round int function. var roundFunc = function (val) { return Math.floor(val); }; // General function to return data based on unit and secondsInUnit var getTimeByUnit = function (secondsTmp, unit, secondsInUnit) { var ret = roundFunc(secondsTmp / secondsInUnit); return { value: ret, text: ret > 0 ? numberWithUnit(ret, unit) : "", // How many seconds left after Math.floor. Means how many second is omitted secondsLeft: (secondsTmp - ret * secondsInUnit) % secondsInUnit }; }; var getSeconds = function (secondsTmp) { var ret = roundFunc(secondsTmp); return { value: ret, text: numberWithUnit(ret, "S"), secondsLeft: 0 }; }; var getMinutes = function (secondsTmp) { var SECONDS_IN_ONE_MINUTE = 60; return getTimeByUnit(secondsTmp, "M", SECONDS_IN_ONE_MINUTE); }; var getHours = function (secondsTmp) { var SECONDS_IN_ONE_HOUR = 3600; return getTimeByUnit(secondsTmp, "H", SECONDS_IN_ONE_HOUR); }; var getDays = function (secondsTmp) { var SECONDS_IN_ONE_DAY = 86400; return getTimeByUnit(secondsTmp, "D", SECONDS_IN_ONE_DAY); }; var getWeeks = function (secondsTmp) { var SECONDS_IN_ONE_WEEK = 604800; return getTimeByUnit(secondsTmp, "W", SECONDS_IN_ONE_WEEK); }; /** * * @param secondsTmp * @param unit The desired time unit, week, day, etc * @param unitCount The count of units. e.g. unitCount=1: "2d", unitCount=2: "1d2h" * @returns {{val: number, text: string, secondsLeft: number}} */ var getTimeWithFormat = function (secondsTmp, unit, unitCount) { var ret = { value: secondsTmp, text: "", secondsLeft: 0 }; // Call corresponding function based on the unit param var unitFuncMappings = [{ "unit": "W", "func": getWeeks }, { "unit": "D", "func": getDays }, { "unit": "H", "func": getHours }, { "unit": "M", "func": getMinutes }, { "unit": "S", "func": getSeconds }]; // Find the index of desired unit var unitIndex = 0, i; for (i = 0; i < unitFuncMappings.length; i++) { if (unitFuncMappings[i].unit == unit) { unitIndex = i; break; } } // Get the time format for desired unitCount for (i = unitIndex; i < unitFuncMappings.length; i++) { if (unitFuncMappings[i].func(secondsTmp).value > 0) { for (var j = 0; j < unitCount; j++) { if (unitFuncMappings[i + j]) { var retTmp = unitFuncMappings[i + j].func(secondsTmp); if (j > 0) { ret.text += " "; // add a space between time units } ret.text += retTmp.text; ret.secondsLeft = retTmp.secondsLeft; secondsTmp = retTmp.secondsLeft; //refresh secondsTmp for next calculation } } break; } } return ret; };