| <input class="typeahead"> | |
| <script> | |
| var substringMatcher = function(states) { | |
| return function findMatches(q, cb) { | |
| var matches, substringRegex; | |
| // an array that will be populated with substring matches | |
| matches = []; | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="https://code.jquery.com/jquery-1.11.3.js"></script> | |
| </head> | |
| <body id="body"> | |
| <button>Click me and watch the console</button> | |
| <script> | |
| function f() { |
| (function(){ | |
| var loadFirstNumber = function(){ | |
| return new Promise(function(resolve, reject){ | |
| var request = $.ajax({ | |
| method: 'get', | |
| url:'/first.json', | |
| }) | |
| request.done(function(result){ | |
| resolve(result.value); |
##Letting Your ActiveRecord Associations Help
Suppose you have the following models:
class User < ActiveRecord::Base
has_many :blogs
has_many :posts, through: :blogs
has_many :received_comments, through: :posts, source: :comments
has_many :expressed_comments, class_name: 'Comment', foreign_key: 'user_id'
Helper methods in rails are used only in views, not controllers. If you want to make a method available to multiple controllers, you can declare it in the ApplicationController, which is the base class for all your controllers. If you want the method to be visible to views, declare it as a helper_method.
| //variables declared in global scope become properties of the window in browser environments | |
| var a = 123; | |
| console.log('a', window.a); | |
| // functions introduce scope. A variable declared inside a function is not visible outside | |
| function f() { | |
| var b = 456; | |
| console.log('b', b); | |
| // inside the function we can still see the global a. We don't need "window." - it's implied | |
| console.log('a', a); |
| // ES 6 basics | |
| setTimeout(() => { | |
| console.log('Hello'); | |
| console.log('Goodbye'); | |
| }, 200); | |
| // One - liners can omit the { } | |
| // and implicitly return the value of their statement | |
| setTimeout(() => 5, 200) |
| # Model files | |
| class Match < ActiveRecord::Base | |
| belongs_to :source, foreign_key: 'from_id', class_name: Personality | |
| belongs_to :target, foreign_key: 'to_id', class_name: Personality | |
| end | |
| class Person < ActiveRecord::Base | |
| belongs_to :personality |
Helper methods in rails are used only in views, not controllers. If you want to make a method available to multiple controllers, you can declare it in the ApplicationController, which is the base class for all your controllers. If you want the method to be visible to views, declare it as a helper_method.
| <key>NSAppTransportSecurity</key> | |
| <dict> | |
| <!--Include to allow all connections (DANGER)--> | |
| <key>NSAllowsArbitraryLoads</key> | |
| <true/> | |
| </dict> |