Created
April 3, 2017 20:36
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| // HTML | |
| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>Redux</title> | |
| </head> | |
| <body> | |
| <div class="counter"> | |
| <h1 class="value">`Counter: ${data.counter}${data.other}`</h1> | |
| <button class="btn decrease"> | |
| Decrease | |
| </button> | |
| <button class="btn increase"> | |
| Increase | |
| </button> | |
| </div> | |
| <script src="bundle.js"></script> | |
| </body> | |
| </html> | |
| // JS | |
| import { createStore } from 'redux' | |
| function counter(state = 0, action) { | |
| switch (action.type) { | |
| case 'INCREMENT': | |
| return state + 1 | |
| case 'DECREMENT': | |
| return state - 1 | |
| default: | |
| return state | |
| } | |
| } | |
| let store = createStore(counter) | |
| let replaceCounter = htmlStr => data => eval(htmlStr) | |
| const counterElement = document.querySelector('.counter > .value') | |
| const { innerHTML: counterInnerHtml } = counterElement | |
| let counterHtmlPristineCopy = { element: counterElement, pristineHtml: counterInnerHtml.substr(0, counterInnerHtml.length) } | |
| const changeCount = ({target}) => { | |
| target.classList.contains('increase') ? store.dispatch({ type: 'INCREMENT' }) : store.dispatch({ type: 'DECREMENT' }) | |
| } | |
| [ document.querySelector('.counter > .increase'), | |
| document.querySelector('.counter > .decrease') | |
| ].forEach(el => el.addEventListener('click', changeCount)) | |
| let getUpdatedDOM = pristineCopy => replaceCounter(pristineCopy.pristineHtml)({counter: store.getState(), other:' :D'}); | |
| let updateDOM = () => { | |
| counterHtmlPristineCopy.element.innerHTML = getUpdatedDOM(counterHtmlPristineCopy) | |
| } | |
| store.subscribe(updateDOM) | |
| updateDOM() |
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