handlebars.js

问题 All assemble users who uses layouts knows that "{{> body }}" marks the point of insertion of contents of any page who uses the layout. But is it possible to define multiple points of insertions, instead of tossing everything at where the {{> body }} is? For instance, in my page I would like to define a specific piece of javascript, but I like that custom javascript to be at the very bottom of the page along with out javascript tags. If it only puts everything where the {{> body }} is, this is

问题 I have a controller object that's like: MyApp.objController = Ember.ArrayController.create({ init: function(data) { data.isValid = function() { return (data.validity === "valid"); } this.pushObject(MyApp.MyObj.create(data)); } }); My view is like: {{#each MyApp.objController}} {{#if isValid}} <some markup> {{else}} <some other markup> {{/if}} {{/each}} I was assuming that the if conditional in Handlebars accepts both values and functions, but this doesn't seem to be the case. Is it actually

问题 I am using Ember, Ember Data, and Handlebars to display a timeline with a number of different types of models. My current implementation, though functioning properly, seems like it could be drastically improved with a convention and a helper. However, I can't figure out how to use already defined templates. This is what I have: {{#view App.AccountSelectedView contentBinding="App.selectedAccountController.everythingSorted"}} {{#with content}} <ol class="timeline"> {{#each this}} {{#is

问题 Is it possible for ember (specifically the application template) to operate inside the head tag in order to dynamically change things like the title tag, meta tags, external css stylesheets and the favicon? If so, what would be a clean way of doing this? 回答1: In order to make this work, what I did was I created handlebar helpers. For Example, If you want to change the title for views which is very common, here is the helper. Ember.Handlebars.helper('headTitle', function(title) { Ember.$('head

问题 Looks like Backbone.view, meteor and handlebars have overlap functionality when it comes to manipulating a section of the DOM. I looked at the ToDo app which is suppose to use Backbone, but in reality, they only use the Router. Backbone views also deal with templates... but they sound so different from meteor templates. Besides, it looks like both backbone & meteor can update the ui on a model update. ok, I am lost!? Who does what? Is Backbone really useful for a Meteor App? Can Backbone &

问题 Looking at the Handlebars.js documentation for precompilation. The instructions are for OSX. Can this be done on Windows as well? If so, when they say to "install node and npm" does "node" refer to "node.js"? 回答1: Install Node.js for Windows from here: http://nodejs.org/download/. Run in the command prompt: npm install handlebars -g Now you can use the following syntax in the command prompt: handlebars <input> -f <output> ,where <input> is an original template file name, and <output> is a pre

问题 Is it possible to dynamically set the text color of a input field based on a handlebars.js template value? I am initially creating my html using this template: <div class="board"> <div class="header"> <span class="name">Project</span> <span class="status">Status</span> </div> {{#each projects}} {{> project}} {{/each}} </div> Where projects is an object read from a db. The resulting html (what gets rendered on the page not what is in my html) for each project looks something like this: <div

问题 Is there a way in Handlebars.js templating to check if the collection or list is null or empty, before going and iterating through the list/collection? // if list is empty do some rendering ... otherwise do the normal {{#list items}} {{/list}} {{#each items}} {{/each}} 回答1: The "each" tag can take an "else" section too. So the simplest form is: {{#each items}} // render item {{else}} // render empty {{/each}} 回答2: If you have something that you want to display once and only if the array has

问题 Is it possible to use the Handlebars.js with the Backbone.Marionette extension without reimplementing the Views render function? It seems that Marionette is relying on the convention that you use Backbone.js with underscores templating engine. But I really like the handlebar approach so I'm asking if I can the high-level-tools of Marionette with handlebars. 回答1: A simple way to use Handlebars with Marionette is simply to define template in each View as a pre-compiled Handlebars template

问题 How do we check for a value equality in ember.js's If-block helper? {{#if person=="John"}} How do we perform above in handlebars? 回答1: The {{#if}} helper can only test for properties, not arbitrary expressions. The best thing to do in cases like this is therefore to write a property computing whatever conditional you want to test for. personIsJohn: function() { return this.get('person') === 'John'; }.property('person') Then do {{#if personIsJohn}} . Note: If you find this too limiting, you