![]() ![]() In the initEvents function, remove the existing handler for the ‘Done’ button on the back that is no longer needed: jQuery('.done-btn'). Go ahead and edit src/javascript/Main.js. When running the command grace new Grace generates a dizmo skeleton, among it the file Dizmo.js, which encapsulates dizmo specific functions and Main.js, which contains the Main class of your project. The handling of this inputfield is taken care by Main.js. įirst, we add an inputfield to the front side of our dizmo: ![]() As we are only going to have a front side, also remove everything from to. In your Todo project folder, edit the file src/index.html. To read more about our Grace tool, refer to the chapter Grace in our complete guide. If you do not wish linting, uncomment the line //"autolint": false, in the file project.cfg. Note: If Node.js is installed, Grace provides linting by default. Name your project ‘Todo’, choose ‘dizmo’ as your default plugin and ‘joose’ as your skeleton.Ĭhange into the folder of your Todo dizmo. Start by creating a new dizmo project for your todo list with $ grace new To kick off this multi-part series, we will build a basic to-do dizmo, using the dizmoElements library and later Backbone.js. This way you do not have to immediately rewrite all of your model attribute getters until you have tested the modified parts of your code.Posted in: developers, dizmo, dizmonks How to create a to-do dizmo In this case, you can pass a Backbone model’s model.attributes to old Javascript methods. The trick here is that during a large-scale refactor, you want to change as few things as possible. However, Backbone uses a get method to retrieve an attribute from a model: // Backbone.js: model. If your models were simple JavaScript object literals (dictionaries), then you were using one of these styles to work with attributes: // JavaScript: model. This is a clear demonstration of over-riding methods in Backbone and then calling super at the appropriate time. Notice, by the way, the last line is how you call super() in JavaScript. Here are two examples of Underscore.js at work: // Get ids of all active feeds _. Think about all of your model collections as reduce-able, filterable, and selectable. You should be comfortable with all enumerable methods. But there are other uses that are beneficial to know. One popular use of Underscore is creating short pipelines that take a large collection of models and filters it based on conditions. Underscore.js is another DocumentCloud library that makes your code more readable and compact by providing useful functions that massage, filter, and jumble data. That means not only being comfortable with reading the source code of these two libraries, but also knowing all of the methods exposed so you can reach into your grab-bag of tricks and pull out the appropriate function. There are only two libraries you need to be intimately familiar with in order to make the most of your Backbone transition: Underscore.js and Backbone.js. There’s no need to go through the presentation. Both have the same content, but this post expands on every concept in the presentation. Depending on your style, you can either read on or flip through this deck. This post was written concurrently with a presentation. The benefit of being open-source is that you can see all of the changes I made in this migration by looking through the commit history.Īs a bit of background, I worked on Backbone.js in its infancy, when Jeremy Ashkenas and I worked on DocumentCloud’s many open-source projects. So given your 2 options, on browsers that support the native forEach, Underscore will be much faster, and will have almost the same run time in all others. NewsBlur is a free RSS feed reader and is open-source. 1 Answer Sorted by: 0 If you look at the underscore source you can see that it tests for the native forEach and then chooses that over using a for loop. It covers moving routers, models, and views, and the process used to migrate a living app. This post explores patterns, techniques, and common pitfalls in migrating from vanilla JavaScript to Backbone.js. This blog post is about decomposing NewsBlur’s single-file 8,500 line JavaScript application into its component parts: 8 models, 12 views, 3 routers, 3 collections. It is a nightmare to bring new engineers up to speed. It’s unwieldy, hard-to-debug, and has little to no separation of concerns. Our code base has one huge monolithic file, packed full of JavaScript spaghetti. Backbonification: migrating a large JavaScript project from DOM spaghetti to Backbone.js November
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |