delete pages that were never translated from en-US (es, part 1) (#1547)

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--- a/files/es/web/javascript/reference/deprecated_and_obsolete_features/the_legacy_iterator_protocol/index.html
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----
-title: The legacy Iterator protocol
-slug: >-
-  Web/JavaScript/Reference/Deprecated_and_obsolete_features/The_legacy_Iterator_protocol
-translation_of: >-
-  Web/JavaScript/Reference/Deprecated_and_obsolete_features/The_legacy_Iterator_protocol
-original_slug: >-
-  Web/JavaScript/Referencia/Características_Desaprobadas/The_legacy_Iterator_protocol
----
-<div>{{jsSidebar("More")}}</div>
-
-<div class="warning"><strong>Non-standard.</strong> The legacy iterator protocol is a SpiderMonkey-specific feature, and will be removed at some point. For future-facing usages, consider using <a href="/en-US/docs/Web/JavaScript/Reference/Statements/for...of" title="/en-US/docs/Web/JavaScript/Reference/Statements/for...of">for..of</a> loops and the <a href="/en-US/docs/Web/JavaScript/Guide/The_Iterator_protocol">iterator protocol</a>.</div>
-
-<h2 id="The_deprecated_Firefox-only_iterator_protocol">The deprecated Firefox-only iterator protocol</h2>
-
-<p>Firefox, prior to version 26 implemented another iterator protocol that is similar to the standard <a href="/en-US/docs/Web/JavaScript/Guide/The_Iterator_protocol">ES6 Iterator protocol</a>.</p>
-
-<p>An object is an legacy iterator when it implements a <code>next()</code> method with the following semantics, and throws {{jsxref("Global_Objects/StopIteration", "StopIteration")}} at the end of iteration.</p>
-
-<table class="standard-table">
- <tbody>
-  <tr>
-   <th scope="col">Property</th>
-   <th scope="col">Value</th>
-  </tr>
-  <tr>
-   <td><code>next</code></td>
-   <td>A zero arguments function that returns an value.</td>
-  </tr>
- </tbody>
-</table>
-
-<h3 id="Difference_between_legacy_and_ES6_iterator_protocols">Difference between legacy and ES6 iterator protocols</h3>
-
-<ul>
- <li>The value was returned directly as a return value of calls to <code>next</code>, instead of the <code>value</code> property of a placeholder object</li>
- <li>Iteration termination was expressed by throwing a {{jsxref("Global_Objects/StopIteration", "StopIteration")}} object.</li>
-</ul>
-
-<h3 id="Simple_example_with_the_old_protocol">Simple example with the old protocol</h3>
-
-<pre class="brush: js">function makeIterator(array){
-    var nextIndex = 0;
-
-    return {
-       next: function(){
-           if(nextIndex &lt; array.length){
-               return array[nextIndex++];
-           else
-               throw new StopIteration();
-       }
-    }
-}
-
-var it = makeIterator(['yo', 'ya']);
-
-console.log(it.next()); // 'yo'
-console.log(it.next()); // 'ya'
-try{
-    console.log(it.next());
-}
-catch(e){
-    if(e instanceof StopIteration){
-         // iteration over
-    }
-}
-</pre>
-
-<h2 id="Mira_también">Mira también</h2>
-
-<ul>
- <li><a href="/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators">Iteradores y generadores</a></li>
- <li>Más More <a href="/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features">características obsoletas</a></li>
-</ul>