Revision 705951 of Legacy generator function

<div class="warning">
 The legacy generator function is a SpiderMonkey-specific feature, and will be removed at some point. For future-facing usages, consider using {{jsxref("Statements/function*", "function*")}}.</div>
<div>
 <div>
  {{jsSidebar("Statements")}}</div>
</div>
<h2 id="Summary">Summary</h2>
<p>The <strong>legacy generator function statement</strong> declares legacy generator function with the specified parameters.</p>
<div class="noinclude">
 <p>You can also define functions using the {{jsxref("Function")}} constructor with <code>functionBody</code> with at least one {{jsxref("Operators/yield", "yield")}} expression, and a {{jsxref("Operators/Legacy_generator_function", "legacy generator function expression")}}.</p>
</div>
<h2 id="Syntax" name="Syntax">Syntax</h2>
<pre class="syntaxbox">
function <em>name</em>([<em>param</em>,[, <em>param</em>,[..., <em>param</em>]]]) {
   [<em>statements</em>]
}
</pre>
<dl>
 <dt>
  <code>name</code></dt>
 <dd>
  The function name.</dd>
</dl>
<dl>
 <dt>
  <code>param</code></dt>
 <dd>
  The name of an argument to be passed to the function. A function can have up to 255 arguments.</dd>
</dl>
<dl>
 <dt>
  <code>statements</code></dt>
 <dd>
  The statements which comprise the body of the function. This should contian at least one {{jsxref("Operators/yield", "yield")}} expression.</dd>
</dl>
<h2 id="Description" name="Description">Description</h2>
<p>An overview of the usage is available on the <a href="/en-US/docs/JavaScript/Guide/Iterators_and_Generators" title="/en-US/docs/JavaScript/Guide/Iterators_and_Generators">Iterators and Generators</a> page.</p>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<p>{{ CompatibilityTable() }}</p>
<div id="compat-desktop">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Chrome</th>
    <th>Firefox (Gecko)</th>
    <th>Internet Explorer</th>
    <th>Opera</th>
    <th>Safari</th>
   </tr>
   <tr>
    <td>Basic support</td>
    <td>{{ CompatNo() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatNo() }}</td>
    <td>{{ CompatNo() }}</td>
    <td>{{ CompatNo() }}</td>
   </tr>
  </tbody>
 </table>
</div>
<div id="compat-mobile">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Android</th>
    <th>Chrome for Android</th>
    <th>Firefox Mobile (Gecko)</th>
    <th>IE Mobile</th>
    <th>Opera Mobile</th>
    <th>Safari Mobile</th>
   </tr>
   <tr>
    <td>Basic support</td>
    <td>{{ CompatNo() }}</td>
    <td>{{ CompatNo() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatNo() }}</td>
    <td>{{ CompatNo() }}</td>
    <td>{{ CompatNo() }}</td>
   </tr>
  </tbody>
 </table>
</div>
<h2 id="See_also" name="See_also">See also</h2>
<ul>
 <li>{{jsxref("Generator")}}</li>
 <li><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Legacy_generator_function">The legacy generator function expression</a></li>
 <li><a href="/en-US/docs/Web/JavaScript/Guide/The_legacy_Iterator_protocol">The legacy Iterator protocol</a></li>
 <li><a href="/en-US/docs/Web/JavaScript/Reference/Functions_and_function_scope" title="JavaScript/Reference/Functions_and_function_scope">Functions and function scope</a></li>
 <li>{{jsxref("Statements/function", "function")}}</li>
 <li>{{jsxref("Operators/function", "function expression")}}</li>
 <li>{{jsxref("Function")}}</li>
 <li>{{jsxref("Statements/function*", "function*")}}</li>
 <li>{{jsxref("Operators/function*", "function* expression")}}</li>
 <li>{{jsxref("GeneratorFunction")}}</li>
 <li><a href="/en-US/docs/Web/JavaScript/Guide/The_Iterator_protocol">The Iterator protocol</a></li>
</ul>