JavaScript: Class Constructor

The fundamental part of most classes is its constructor, which sets up each instance’s initial state and handles any parameters that were passed when calling new. It’s defined in a class block as though you’re defining a method named constructor, though it’s actually handled as a special case. Example usage: A small thing to note … 

 

Creating a search form

To create a search form, enter the following code form_tag: This is the default helper for creating a form. It’s first parameter, /search is the action and the second parameter specifies the HTTP method. For search forms, it is important to always use the method get label_tag: This helper creates an html “ tag. text_field_tag: This will create an input … 

 

Helpers for form elements

Checkboxes This will generate the following html “` I own a dog I own a cat [/ruby] Radio Buttons This generates the following HTML Text Area To create a larger text box, it is recommended to use the text_area_tag This will create the following HTML Number Field This will create an input element To specify a range of … 

 

JavaScript Best Practices: Functions

Function expressions: Function declarations: Never declare a function in a non-function block (if, while, etc). Assign the function to a variable instead. Browsers will allow you to do it, but they all interpret it differently, which is bad news bears. Note: ECMA-262 defines a block as a list of statements. A function declaration is not … 

 

Public APIs

A collective list of JSON APIs for use in web development. Animals API Description Auth HTTPS Link IUCN IUCN Red List of Threatened Species token No Go! Petfinder Adoption No Yes Go! RescueGroups Adoption No Yes Go! Anime API Description Auth HTTPS Link AniList AniList Anime OAuth No Go! Kitsu Kitsu Anime OAuth No Go! … 

 

Ruby – Methods

Methods provide a way to collect and organize programs statements and expressions into one place so that you can use them in an easy way and repeatedly when you want. The majority of Ruby’s operators are Methods. Here is an example of a definition of a method name hello def hello puts “Hellow, world!” end … 

 

Ruby Variables

Local Variables A local variable has a local scope or context. If defined within a method, its scope is kept within that method. Local variables must begin with either a lowercase letter or an underscore (_) Must not be prefixed with @, @@, or $ because they are reserved for other types of variables Instance …