Typewriter Vanilla

Typewriter effect that can be applied to any DOM element. Uses RxJS.
The main purpose is actually to focus on the "text" logic, so it can be reused in any form of React, React-Native, Angular, Vue.js, jQuery plugin, Web components; or simply in vanilla JS

Features

• Pure logic available as an observable
• Start/stop
• Typing speed (randomized within a range if you choose to do so)
• "Pattern" for caret blink between sentences

Process

1. npm install typewriter_vanilla
2. Add to a HTML file with a simple <script> tag (UMD), or use it in a webpack/browserify/commonjs context
3. Add it to an element using

var typewriterInstance = window.typewriter_vanilla.input(document.getElementsByTagName('input')[0], [
    'hello world',
    'something s cooking',
    'it smells of vanilla'
  ], {autoStart: true})
typewriterInstance.stop()
typewriterInstance.start()
typewriterInstance.clear()

4. You can also simply subscribe to the observable typewriterInstance.text$

Examples

• Serve from the root of the git repo using e.g. Python's SimpleHttpServer.
• Navigate to examples/text.html

Logic only

You can easily use any of the existing modules:

• randomTimer(min, max): build a timer observable that will emit at random times between min/max each time; emits incremented numbers
• word(sentence, min, max): Observable which emits the letters of the sentence using a random timer as above then completes
• cursor(pattern=[200,700,300], character='|', empty=''): Observable which emits first empty then 200ms later, emits character and leaves it there for 700ms, then blank for 300ms. Change the pattern to change the "blinking" or blink longer; after "pattern", the observable completes.
• typewriter(words, characterOptions, cursorOptions): the full observable; a concatenation of a "word" observable followed by a "cursor" observable for each word in words. Completes after going through all the words, unless characterOptions' loop is set to true

TODO

• Pause
• Observable documentation (marble diagrams)
• Tests
• npm script for serving, use Node http server