Divergence Meter

Create divergence meters in your web page just like in Steins;Gate!

Update (2016-01): New version adds new properties: type, clock, interval. Divmeter now defaults to type live, so if you are using a "static" Divmeter, you need to set type: 'static' in your Divmeter settings (or data-type="static" in HTML).

How to install

• Download the latest ZIP file
• bower install divergence-meter
• Clone the repo

How to use

Add divmeter.js to your page.

<script src="divmeter.js"></script>

1. Use a <divmeter> element or a <div> element

Using <divmeter>:

<divmeter data-time="2014-01-11T01:12:59.371Z">

Using <div>:

<div class="divmeter" data-time="local">

If you change data-time to local, your divergence meter will automatically update itself to the local time.

Use the properties below to customize your divergence meter!

2. Add with JavaScript

var meter = new DivMeter({
  height: '100px',
  element: document.getElementById()
});

meter.time('2014-01-11T01:12:59.371Z');

Configuration

You can initiate Divmeter with an object with these properties:

Properties

(required) element

Accepted values:

• A CSS selector string (querySelectorAll is used)
• A NodeList or HTMLCollection
• An HTMLElement or Element or Node

---

(optional) type

Default value: live
Accepted values:

• live
• null, static

---

(optional) time

Default value: local
Accepted values: local or anything that is parsable by Date.parse function

---

(optional) height

This property sets height of each image.

Default value: 90px
Accepted values: CSS height, fluid

---

(optional) width

This property sets width of each image.

Accepted values: CSS width, fluid

---

(optional) prefix

Prefix for image URLs.

Accepted values: A string

---

(optional) suffix

Suffix for image URLs.

Accepted values: A string

---

(optional) clock

This function is called every time clock ticks, the return value of this function will set clock date to the returned Date.

Default value: A function that adds 1 second to the defined date.

---

(optional) interval

Clock tick interval in milliseconds

Default value: 1000
Accepted values: Any integer

Change default values

Use window.DivmeterInitConfig to set the initial values for window.Divmeter.defaultConfig. DivmeterInitConfig is only processed once so if you want to change default values after script initialization, use window.Divmeter.defaultConfig instead.

Put DivmeterInitConfig definition before the script itself:

<script type="text/javascript">
  var DivmeterInitConfig = {
    height: '180px',
    prefix: './img/',
    suffix: '.jpg',
    time: 'local'
  };
</script>
<script type="text/javascript" src="divmeter.js"></script>

Disable auto-init on page load

By default, the library will automatically create Divmeters for you but if you don't want that, you can disable it with:

window.DivmeterAutoInit = false;

Start/stop clock on an existing meter

When you create a new divergence meter, it will assign a new ID to its parent element (div or divmeter):

The initialized meters look like this:

<div id="divmeter-1389544582397" class="divmeter divmeter-complete" data-time="local">...</div>

You can access a divergence meter's methods using Divmeter.getById method:

var el = document.getElementById('divmeter-1389544582397');
var divmeter = Divmeter.getById(el);

divmeter.time('local');
divmeter.start(); // Start the clock if it's "local"
divmeter.stop();

To do:

• Moment.js support
• Write tests
• Responsive container