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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Scroll Test</title> | |
| <style> | |
| .wrapper { | |
| height: 40px; | |
| width: 400px; | |
| overflow: auto; | |
| } | |
| .content { | |
| height: 40px; | |
| width: 800px; | |
| background: repeating-linear-gradient( | |
| 45deg, | |
| #606dbc, | |
| #606dbc 10px, | |
| #465298 10px, | |
| #465298 20px | |
| ); | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="container"> | |
| <div class="wrapper" id="js-top-scroll"> | |
| <div class="content"></div> | |
| </div> | |
| <div class="wrapper" id="js-bottom-scroll"> | |
| <div class="content"></div> | |
| </div> | |
| </div> | |
| <script src="scroll.js"></script> | |
| </body> | |
| </html> |
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| class ScrollHandler | |
| constructor: (options) -> | |
| @top = options.top | |
| @bottom = options.bottom | |
| bind_events: -> | |
| @_bind_top() | |
| @_bind_bottom() | |
| _bind_top: -> | |
| @top.addEventListener("scroll", (event) => | |
| @bottom.scrollLeft = event.target.scrollLeft if @bottom.scrollLeft - event.target.scrollLeft < -1 or @bottom.scrollLeft - event.target.scrollLeft > 1 | |
| ) | |
| _bind_bottom: -> | |
| @bottom.addEventListener("scroll", (event) => | |
| @top.scrollLeft = event.target.scrollLeft if @top.scrollLeft - event.target.scrollLeft < -1 or @top.scrollLeft - event.target.scrollLeft > 1 | |
| ) | |
| scroll_handler = new ScrollHandler | |
| top: document.getElementById("js-top-scroll") | |
| bottom: document.getElementById("js-bottom-scroll") | |
| scroll_handler.bind_events() |
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| // Generated by CoffeeScript 1.6.2 | |
| var ScrollHandler, scroll_handler; | |
| ScrollHandler = (function() { | |
| function ScrollHandler(options) { | |
| this.top = options.top; | |
| this.bottom = options.bottom; | |
| } | |
| ScrollHandler.prototype.bind_events = function() { | |
| this._bind_top(); | |
| return this._bind_bottom(); | |
| }; | |
| ScrollHandler.prototype._bind_top = function() { | |
| var _this = this; | |
| return this.top.addEventListener("scroll", function(event) { | |
| return _this.bottom.scrollLeft = event.target.scrollLeft; | |
| }); | |
| }; | |
| ScrollHandler.prototype._bind_bottom = function() { | |
| var _this = this; | |
| return this.bottom.addEventListener("scroll", function(event) { | |
| return _this.top.scrollLeft = event.target.scrollLeft; | |
| }); | |
| }; | |
| return ScrollHandler; | |
| })(); | |
| scroll_handler = new ScrollHandler({ | |
| top: document.getElementById("js-top-scroll"), | |
| bottom: document.getElementById("js-bottom-scroll") | |
| }); | |
| scroll_handler.bind_events(); |
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