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Backbone Nested Views with MutationObservers.
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> | |
| <title>Self Initializing Backbone View</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <script src="jquery.js"></script> | |
| <script src="underscore.js"></script> | |
| <script src="backbone.js"></script> | |
| <script src="self-initializing-view.js"></script> | |
| <script src="my-view.js"></script> | |
| <script src="main.js"></script> | |
| </head> | |
| <body> | |
| </body> | |
| </html> |
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| Backbone.$('body').append('<x-my-tag/>') |
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| var MyView = Backbone.View.Extend({ | |
| tagName: 'x-my-tag', | |
| initialize: function () { | |
| this.render() | |
| }, | |
| render: function () { | |
| this.$el.html('x-my-tag is rendered') | |
| } | |
| }) | |
| selfInitializingView(MyView) |
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| function selfInitializingView (View) { | |
| if (!View) { | |
| return | |
| } | |
| var selector = determineSelector(View) | |
| new MutationObserver(function (mutations) { | |
| mutations.forEach(function (mutation) { | |
| if (mutation.type === 'childList') { | |
| var $addedNodes = Backbone.$(mutation.addedNodes) | |
| , $els = $addedNodes | |
| .filter(selector) | |
| .add($addedNodes.find(selector)) | |
| new View({ el: $els }) | |
| } | |
| }) | |
| }).observe(document.querySelector('body'), { | |
| attributes: false, | |
| childList: true, | |
| characterData: false | |
| }) | |
| return View | |
| } | |
| function determineSelector (View) { | |
| if (View.prototype.id) { | |
| return '#' + View.prototype.id | |
| } | |
| else { | |
| return View.prototype.tagName | |
| } | |
| } |
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