-
-
Save designeng/bff1c7b573edf57eb9b0d3c728f2a9a9 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title></title> | |
| </head> | |
| <body> | |
| <div id="output_h"></div> | |
| <div id="output_v"></div> | |
| <script src="virtual-dom.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/4.0.5/handlebars.min.js"></script> | |
| <script id="handlebars_template" type="text/x-handlebars-template"> | |
| <div class="list" data-id="{{id}}"> | |
| <ul> | |
| {{#each items}} | |
| <li>{{text}}</li> | |
| {{/each}} | |
| </ul> | |
| </div> | |
| </script> | |
| <script> | |
| window.onload = function() { | |
| var h = virtualDom.h; | |
| var diff = virtualDom.diff; | |
| var createElement = virtualDom.create; | |
| var patch = virtualDom.patch; | |
| var h_config = { | |
| container: document.querySelector('#output_h'), | |
| render: function(data) { | |
| var html = this.template(data); | |
| this.container.innerHTML = html; | |
| }, | |
| template: null, | |
| setUp: function() { | |
| var h_template_html = document.querySelector('#handlebars_template').innerHTML; | |
| this.template = Handlebars.compile(h_template_html); | |
| }, | |
| }; | |
| var v_config = { | |
| _prev_tree: null, | |
| _root_node: null, | |
| container: document.querySelector('#output_v'), | |
| render: function(data) { | |
| var tree = this.template(data); | |
| this.root_node = this.root_node || createElement(tree); | |
| if (this._prev_tree) { | |
| var patches = diff(this._prev_tree, tree); | |
| this.root_node = patch(this.root_node, patches); | |
| } else { | |
| this.container.appendChild(this.root_node); | |
| } | |
| this._prev_tree = tree; | |
| }, | |
| template: function(data) { | |
| return h('.list', { attributes: { 'data-id': data.id } }, [ | |
| h('ul', [ | |
| data.items.map(function(item) { | |
| return h('li', [item.text]); | |
| }), | |
| ]), | |
| ]); | |
| }, | |
| setUp: function() {}, | |
| }; | |
| var data = { | |
| id: 123, | |
| items: [ | |
| { text: 'one' }, | |
| { text: 'two' }, | |
| { text: 'three' }, | |
| { text: 'four' }, | |
| { text: 'five' }, | |
| ] | |
| }; | |
| var data_diff = { | |
| id: 123, | |
| items: [ | |
| { text: 'one' }, | |
| { text: 'two' }, | |
| { text: 'four' }, | |
| { text: 'six' }, | |
| ] | |
| }; | |
| function _testRender(name, config, iterations) { | |
| config.setUp(); | |
| console.time(name); | |
| for (var i = 0; i < iterations; i++) { | |
| if (i % 2 == 0) { | |
| config.render(data); | |
| } else { | |
| config.render(data_diff); | |
| } | |
| } | |
| console.timeEnd(name); | |
| } | |
| console.log('10 ITERATIONS ================='); | |
| _testRender('Handlebars', h_config, 10); | |
| _testRender('Virtual DOM', v_config, 10); | |
| console.log('100 ITERATIONS ================='); | |
| _testRender('Handlebars', h_config, 100); | |
| _testRender('Virtual DOM', v_config, 100); | |
| console.log('1000 ITERATIONS ================='); | |
| _testRender('Handlebars', h_config, 1000); | |
| _testRender('Virtual DOM', v_config, 1000); | |
| }; | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment