191 lines
5.2 KiB
Markdown
191 lines
5.2 KiB
Markdown
#Timestring
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[](http://travis-ci.org/mike182uk/timestring)
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[](https://coveralls.io/r/mike182uk/timestring)
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[](https://www.npmjs.com/package/timestring)
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[](https://www.npmjs.com/package/timestring)
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Parse a human readable time string into a time based value.
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##Overview
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```js
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var str = '1h 15m';
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var time = str.parseTime();
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console.log(time); // will log 4500
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```
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In the example above `str` is just a plain old `String` object. A new method is added to the `String` objects prototype named `parseTime`. This method parses the string and returns a time based value.
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**By default the returned time value will be in seconds.**
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The time string can contain as many time groups as needed:
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```js
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var str = '1d 3h 25m 18s';
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var time = str.parseTime();
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console.log(time); // will log 98718
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```
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and can be as messy as you like:
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```js
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var str = '1 d 3HOurS 25 min 1 8s';
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var time = str.parseTime();
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console.log(time); // will log 98718
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```
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As well as using the `String` objects `parseTime` method you can create a `Timestring` object and parse the string manually:
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```js
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var str = '1h 15m';
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var time = (new Timestring()).parse(str);
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console.log(time); // will log 4500
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```
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##Keywords
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Timestring will parse the following keywords into time values:
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1. `s, sec, secs, second, seconds` - will parse to seconds
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2. `m, min, mins, minute, minutes` - will parse to minutes
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3. `h, hr, hrs, hour, hours` - will parse to hours
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4. `d, day, days` - will parse to days
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5. `w, week, weeks` - will parse to weeks
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6. `mth, mths, month, months` - will parse to months
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7. `y, yr, yrs, year, years` - will parse to years
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Keywords can be used interchangeably:
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```js
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var str = '1day 15h 20minutes 15s';
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var time = str.parseTime();
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console.log(time); // will log 141615
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```
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##Return Time Value
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By default the return time value will be in seconds. This can be changed by passing one of the following strings as an argument to `String.parseTime` or `Timestring.parse`:
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1. `s` - Seconds
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2. `m` - Minutes
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3. `h` - Hours
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4. `d` - Days
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5. `w` - Weeks
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6. `mth` - Months
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7. `y` - Years
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```js
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var str = '22h 16m';
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var hours = str.parseTime('h'); // 22.266666666666666
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var days = str.parseTime('d'); // 0.9277777777777778
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var weeks = str.parseTime('w'); // 0.13253968253968254
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// or
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var hours = (new Timestring()).parse(str, 'h'); // 22.266666666666666
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var days = (new Timestring()).parse(str, 'd'); // 0.9277777777777778
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var weeks = (new Timestring()).parse(str, 'w'); // 0.13253968253968254
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```
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##Optional Configuration
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A few assumptions are made by default:
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1. There are 24 hours per day
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2. There are 7 days per week
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3. There are 4 weeks per month
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4. There are 12 months per year
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These settings can be changed by passing a settings object as an argument to `String.parseTime` or to the `Timestring` objects constructor.
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The following settings are configurable:
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1. `hoursPerDay`
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2. `daysPerWeek`
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3. `weeksPerMonth`
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4. `monthsPerYear`
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```js
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var str = '1d';
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var settings = {
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hoursPerDay: 1
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}
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var time = str.parseTime('h', settings);
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// or
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var time = (new Timestring(settings)).parse(str, 'h');
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console.log(time); // will log 1
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```
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In the example above `hoursPerDay` is being set to `1`. When the time string is being parsed, the return value is being specified as hours. Normally `1d` would parse to `24` hours (as by deafult there are 24 hours in a day) but because `hoursPerDay` has been set to `1`, `1d` will now only parse to `1` hour.
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This would be useful for specific application needs.
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*Example - Employees of my company work 7.5 hours a day, and only work 5 days a week. In my time tracking app, when they type `1d` i want 7.5 hours to be tracked. When they type `1w` i want 5 days to be tracked etc.*
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```js
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var settings = {
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hoursPerDay: 7.5,
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daysPerWeek: 5
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}
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// get time values from form input
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var today = document.querySelector('time-input').value, // '1d'
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thisWeek = document.querySelector('time-input').value; // '1w'
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// parse times
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var hoursToday = today.parseTime('h', settings),
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daysThisWeek = thisWeek.parseTime('d', settings);
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// or
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var hoursToday = (new Timestring(settings)).parse(today, 'h'),
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daysThisWeek = (new Timestring(settings)).parse(thisWeek, 'd');
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console.log(hoursToday); // will log 7.5
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console.log(daysThisWeek); // will log 5
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```
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##Installation
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###Browser
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All you need to do to get timestring working in the browser is download / clone this repo and make sure you include the `dist/timestring.min.js` script on your page:
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```html
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<script src="<path-to-src>/dist/timestring.min.js"></script>
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```
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Alternatively you can you use bower to manage this dependency for you:
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```bash
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bower install timestring --save
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```
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###Node
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To install for a node application, navigate to the projects root folder and in your terminal type the following:
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```bash
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npm install timestring --save
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```
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In your node application you need to require the timestring module:
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```js
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var Timestring = require('timestring');
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```
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