mirror of
https://github.com/jashkenas/coffeescript.git
synced 2026-01-22 05:07:58 -05:00
245 lines
11 KiB
HTML
245 lines
11 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>browser.coffee</title>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<meta name="viewport" content="width=device-width, target-densitydpi=160dpi, initial-scale=1.0; maximum-scale=1.0; user-scalable=0;">
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<link rel="stylesheet" media="all" href="public/stylesheets/normalize.css" />
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<link rel="stylesheet" media="all" href="docco.css" />
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</head>
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<body>
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<div class="container">
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<div class="page">
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<div class="header">
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<h1>browser.coffee</h1>
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<div class="toc">
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<h3>Table of Contents</h3>
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<ol>
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<li>
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<a class="source" href="browser.html">
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browser.coffee
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</a>
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</li>
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<li>
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<a class="source" href="cake.html">
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cake.coffee
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</a>
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</li>
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<li>
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<a class="source" href="coffee-script.html">
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coffee-script.coffee
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</a>
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</li>
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<li>
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<a class="source" href="command.html">
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command.coffee
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</a>
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</li>
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<li>
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<a class="source" href="grammar.html">
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grammar.coffee
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</a>
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</li>
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<li>
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<a class="source" href="helpers.html">
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helpers.coffee
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</a>
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</li>
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<li>
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<a class="source" href="index.html">
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index.coffee
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</a>
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</li>
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<li>
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<a class="source" href="lexer.html">
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lexer.coffee
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</a>
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</li>
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<li>
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<a class="source" href="nodes.html">
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nodes.coffee
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</a>
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</li>
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<li>
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<a class="source" href="optparse.html">
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optparse.coffee
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</a>
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</li>
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<li>
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<a class="source" href="repl.html">
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repl.coffee
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</a>
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</li>
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<li>
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<a class="source" href="rewriter.html">
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rewriter.coffee
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</a>
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</li>
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<li>
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<a class="source" href="scope.html">
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scope.litcoffee
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</a>
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</li>
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<li>
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<a class="source" href="sourcemap.html">
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sourcemap.coffee
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</a>
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</li>
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</ol>
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</div>
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</div>
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<p>Override exported methods for non-Node.js engines.
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</p>
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<div class="highlight"><pre><span class="nv">CoffeeScript = </span><span class="nx">require</span> <span class="s">'./coffee-script'</span>
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<span class="nv">CoffeeScript.require = </span><span class="nx">require</span></pre></div>
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<p>Use standard JavaScript <code>eval</code> to eval code.
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</p>
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<div class="highlight"><pre><span class="nv">CoffeeScript.eval = </span><span class="nf">(code, options = {}) -></span>
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<span class="nx">options</span><span class="p">.</span><span class="nx">bare</span> <span class="o">?=</span> <span class="kc">on</span>
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<span class="nb">eval</span> <span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">code</span><span class="p">,</span> <span class="nx">options</span></pre></div>
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<p>Running code does not provide access to this scope.
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</p>
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<div class="highlight"><pre><span class="nv">CoffeeScript.run = </span><span class="nf">(code, options = {}) -></span>
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<span class="nv">options.bare = </span><span class="kc">on</span>
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<span class="nb">Function</span><span class="p">(</span><span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">code</span><span class="p">,</span> <span class="nx">options</span><span class="p">)()</span></pre></div>
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<p>If we're not in a browser environment, we're finished with the public API.
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</p>
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<div class="highlight"><pre><span class="k">return</span> <span class="k">unless</span> <span class="nb">window</span><span class="o">?</span></pre></div>
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<p>Load a remote script from the current domain via XHR.
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</p>
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<div class="highlight"><pre><span class="nv">CoffeeScript.load = </span><span class="nf">(url, callback, options = {}) -></span>
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<span class="nv">xhr = </span><span class="k">if</span> <span class="nb">window</span><span class="p">.</span><span class="nx">ActiveXObject</span>
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<span class="k">new</span> <span class="nb">window</span><span class="p">.</span><span class="nx">ActiveXObject</span><span class="p">(</span><span class="s">'Microsoft.XMLHTTP'</span><span class="p">)</span>
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<span class="k">else</span>
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<span class="k">new</span> <span class="nx">XMLHttpRequest</span><span class="p">()</span>
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<span class="nx">xhr</span><span class="p">.</span><span class="nx">open</span> <span class="s">'GET'</span><span class="p">,</span> <span class="nx">url</span><span class="p">,</span> <span class="kc">true</span>
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<span class="nx">xhr</span><span class="p">.</span><span class="nx">overrideMimeType</span> <span class="s">'text/plain'</span> <span class="k">if</span> <span class="s">'overrideMimeType'</span> <span class="k">of</span> <span class="nx">xhr</span>
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<span class="nv">xhr.onreadystatechange = </span><span class="nf">-></span>
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<span class="k">if</span> <span class="nx">xhr</span><span class="p">.</span><span class="nx">readyState</span> <span class="o">is</span> <span class="mi">4</span>
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<span class="k">if</span> <span class="nx">xhr</span><span class="p">.</span><span class="nx">status</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">,</span> <span class="mi">200</span><span class="p">]</span>
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<span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">run</span> <span class="nx">xhr</span><span class="p">.</span><span class="nx">responseText</span><span class="p">,</span> <span class="nx">options</span>
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<span class="k">else</span>
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<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s">"Could not load </span><span class="si">#{</span><span class="nx">url</span><span class="si">}</span><span class="s">"</span>
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<span class="nx">callback</span><span class="p">()</span> <span class="k">if</span> <span class="nx">callback</span>
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<span class="nx">xhr</span><span class="p">.</span><span class="nx">send</span> <span class="kc">null</span></pre></div>
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<p>Activate CoffeeScript in the browser by having it compile and evaluate
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all script tags with a content-type of <code>text/coffeescript</code>.
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This happens on page load.
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</p>
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<div class="highlight"><pre><span class="nv">runScripts = </span><span class="nf">-></span>
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<span class="nv">scripts = </span><span class="nb">document</span><span class="p">.</span><span class="nx">getElementsByTagName</span> <span class="s">'script'</span>
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<span class="nv">coffeetypes = </span><span class="p">[</span><span class="s">'text/coffeescript'</span><span class="p">,</span> <span class="s">'text/literate-coffeescript'</span><span class="p">]</span>
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<span class="nv">coffees = </span><span class="p">(</span><span class="nx">s</span> <span class="k">for</span> <span class="nx">s</span> <span class="k">in</span> <span class="nx">scripts</span> <span class="k">when</span> <span class="nx">s</span><span class="p">.</span><span class="nx">type</span> <span class="k">in</span> <span class="nx">coffeetypes</span><span class="p">)</span>
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<span class="nv">index = </span><span class="mi">0</span>
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<span class="nv">length = </span><span class="nx">coffees</span><span class="p">.</span><span class="nx">length</span>
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<span class="nx">do</span> <span class="nv">execute = </span><span class="nf">-></span>
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<span class="nv">script = </span><span class="nx">coffees</span><span class="p">[</span><span class="nx">index</span><span class="o">++</span><span class="p">]</span>
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<span class="nv">mediatype = </span><span class="nx">script</span><span class="o">?</span><span class="p">.</span><span class="nx">type</span>
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<span class="k">if</span> <span class="nx">mediatype</span> <span class="k">in</span> <span class="nx">coffeetypes</span>
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<span class="nv">options = </span><span class="p">{</span><span class="nv">literate: </span><span class="nx">mediatype</span> <span class="o">is</span> <span class="s">'text/literate-coffeescript'</span><span class="p">}</span>
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<span class="k">if</span> <span class="nx">script</span><span class="p">.</span><span class="nx">src</span>
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<span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">load</span> <span class="nx">script</span><span class="p">.</span><span class="nx">src</span><span class="p">,</span> <span class="nx">execute</span><span class="p">,</span> <span class="nx">options</span>
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<span class="k">else</span>
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<span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">run</span> <span class="nx">script</span><span class="p">.</span><span class="nx">innerHTML</span><span class="p">,</span> <span class="nx">options</span>
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<span class="nx">execute</span><span class="p">()</span>
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<span class="kc">null</span></pre></div>
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<p>Listen for window load, both in browsers and in IE.
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</p>
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<div class="highlight"><pre><span class="k">if</span> <span class="nb">window</span><span class="p">.</span><span class="nx">addEventListener</span>
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<span class="nx">addEventListener</span> <span class="s">'DOMContentLoaded'</span><span class="p">,</span> <span class="nx">runScripts</span><span class="p">,</span> <span class="kc">no</span>
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<span class="k">else</span>
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<span class="nx">attachEvent</span> <span class="s">'onload'</span><span class="p">,</span> <span class="nx">runScripts</span>
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</pre></div>
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<div class="fleur">h</div>
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</div>
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</div>
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</body>
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</html>
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