Countable - Add live paragraph, word and character counting

Countable is a JavaScript function to add live paragraph, word and character counting to an HTML element. Countable is a zero-dependency library and comes in at 1KB when minified and gzipped.

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Source: sachaschmid.ch

1. INCLUDE JS FILES

<script src="https://rawgithub.com/RadLikeWhoa/Countable/master/Countable.js"></script>

2. HTML

<textarea id="countableArea" autofocus placeholder="Start entering some text here"></textarea>

3. JAVASCRIPT

var area = document.getElementById('countableArea');

Countable.once(area, function (counter) {
  console.log(this, counter)
});

4. CALLBACKS

The live and once methods both accept a callback. The given callback is then called whenever needed with a single parameter that carries all the releavant data. this is bound to the current element. Take the following code for an example.

var area = document.getElementById('text')

Countable.once(area, function (counter) {
  console.log(this, counter)
})

=> <textarea id="text"></textarea>, { all: 0, characters: 0, paragraphs: 0, words: 0 }

Countable.live(elements, callback, options)

Bind the callback to all given elements. The callback gets called everytime the element's value or text is changed.

Countable.live(area, function (counter) {
  console.log(counter)
})

Countable.die(elements)

Remove the bound callback from all given elements.

Countable.die(area)

Countable.once(elements, callback, options)

Similar to Countable.live(), but the callback is only executed once, there are no events bound.

Countable.once(area, function (counter) {
  console.log(counter)
})

Countable.enabled(element)

Checks the live-counting functionality is bound to the given.

Countable.enabled(area)

5. OPTIONS

Countable.live() and Countable.once() both accept a third argument, an options object that allows you to change how Countable treats certain aspects of your element's text.

{
  hardReturns: false,
  stripTags: false,
  ignoreReturns: false
}

By default, paragraphs are split by a single return (a soft return). By setting hardReturns to true, Countable splits paragraphs after two returns.

Depending on your application and audience, you might need to strip HTML tags from the text before counting it. You can do this by setting stripTags to true.

In most cases, returns should be counted as part of the all property. Set ignoreReturns to false to remove them from the counter.