e620434a2e
* Replace tiny bitmaps with base64-encoded URIs
* Optimize SVGs; replace logo PNG with SVG
* Modernize favicon
* Embed CSS; a bit unorthodox, but we’re a single page so there’s no point in separate .css files and their separate HTTP requests
* Documentation is now markdown, converted to HTML on compilation
* Render the examples when we’re rendering index.html; they compile so quickly that there’s no need to pre-render them and save the intermediate .js files
* Split apart index.html into components that Cakefile assembles, so that we can add in logic to include different files for v1 versus v2
* Split building index.html and building test.html into two tasks; collapse the parts of `releaseHeader` into one compact function
* Move include logic into templates
* Get error messages tests to work in the browser
* Update output index.html
* Split body into nav and body
* Watch subtemplates
* Revert "Split body into nav and body"
This reverts commit ec9e559ec0.
* Add marked
* Update gitignore
* Use idiomatic markdown output for code blocks (<pre><code>)
* Handle ids within the template, not in the Cakefile; remove marked’s auto-generated and conflicting ids
* Move the `codeFor` function into versioned folders, so that v1 and v2 docs can have different example code blocks/editors
* Update packages, including new highlight.js which supports our newer keywords and triple backticks (docs output is unchanged)
1.9 KiB
Operators and Aliases
Because the == operator frequently causes undesirable coercion, is intransitive, and has a different meaning than in other languages, CoffeeScript compiles == into ===, and != into !==. In addition, is compiles into ===, and isnt into !==.
You can use not as an alias for !.
For logic, and compiles to &&, and or into ||.
Instead of a newline or semicolon, then can be used to separate conditions from expressions, in while, if/else, and switch/when statements.
As in YAML, on and yes are the same as boolean true, while off and no are boolean false.
unless can be used as the inverse of if.
As a shortcut for this.property, you can use @property.
You can use in to test for array presence, and of to test for JavaScript object-key presence.
To simplify math expressions, ** can be used for exponentiation and // performs integer division. % works just like in JavaScript, while %% provides “dividend dependent modulo”:
codeFor('modulo')
All together now:
| CoffeeScript | JavaScript |
|---|---|
| `is` | `===` |
| `isnt` | `!==` |
| `not` | `!` |
| `and` | `&&` |
| `or` | `||` |
| `true`, `yes`, `on` | `true` |
| `false`, `no`, `off` | `false` |
| `@`, `this` | `this` |
| `of` | `in` |
| `in` | _no JS equivalent_ |
| `a ** b` | `Math.pow(a, b)` |
| `a // b` | `Math.floor(a / b)` |
| `a %% b` | `(a % b + b) % b` |
codeFor('aliases')