var arr = [{name: ‘a’, value: ‘b’, other: ‘c’}, {name: ‘d’, value: ‘e’, other: ‘f’}]; var obj = arr.reduce(function ( total, current ) { total[ current.name ] = current.value; return total; }, {}); Pure javascript. It’s practically a one liner, and it looks hawt. Array.prototype.reduce is ES5, but isn’t difficult to shim. Here’s an example … Read more
Partial rendering of views In order to minimize the full rendering of your DOM hierarchy, you can set up special nodes in your DOM that will reflect updates on a given property. Let’s use this simple Underscore template, a list of names: <ul> <% _(children).each(function(model) { %> <li> <span class=”model-<%= model.cid %>-name”><%= model.name %></span> : … Read more
I’ve recently started a project to provide an enhanced, extensible, embeddable interactive interpreter for multiple languages running on Node (including built-in support for CoffeeScript) here: http://danielgtaylor.github.com/nesh/ It’s pretty basic at the moment but it already provides a nice base with multi-language support and an asynchronous plugin architecture, a small set of built-in utility functions, etc. … Read more
You can’t use standard JS like that in a Coffeescript file. Either rename the file to rfq.js, or convert it to coffeescript: $ -> $(‘#need_report’).change -> if $(this).val() $(‘#report_language’).hide()
use a comprehension for d, i in flights console.log d, i The code above translates to var d, i, _i, _len; for (i = _i = 0, _len = flights.length; _i < _len; i = ++_i) { d = flights[i]; console.log(d, i); } so you can see d and i are what you want them … Read more
Introduction Webpack is mainly a JavaScript-bundler. Its “native” language is JavaScript and every other source requires a loader which transforms it to JavaScript. If you require() an html-file for example… var template = require(“./some-template.html”); …you’ll need the html-loader. It turns… <div> <img src=”https://stackoverflow.com/questions/26851120/./assets/img.png”> </div> …into… module.exports = “<div>\n <img src=\”” + require(“https://stackoverflow.com/questions/26851120/./assets/img.png”) + “\”>\n</div>”; If … Read more
CoffeeScript links both this and @ to the outer context, therefore you cannot access the context that jQuery provided (aka the desired “this”). Use event.target instead: class PostForm constructor: -> $(‘ul.tabs li’).on ‘click’, (event) => tab = $(event.target) @highlight_tab(tab)
Two options: this.currentModel or this.modelFor(routeName) Update I spoke to Señor Alex Matchneer about this. There are no plans for this.currentModel to go away anytime soon, but he considers this.modelFor(this.routeName) the public API.
Update: on newer browsers – use .fill: Array(1000).fill(”) will create an array of 1000 empty strings. Yes, there is a way: var n = 1000; Array(n).join(“.”).split(“.”); // now contains n empty strings. I’d probably use the loop though, it conveys intent clearer. function repeat(num,whatTo){ var arr = []; for(var i=0;i<num;i++){ arr.push(whatTo); } return arr; } … Read more
The accepted solution did not work for me on nodejs 0.8.22 and express 3.1.0. This did the trick: process.on(‘uncaughtException’, function(err) { if(err.errno === ‘EADDRINUSE’) console.log(…); else console.log(err); process.exit(1); }); Also see Node.js Express app handle startup errors