aboutsummaryrefslogtreecommitdiff
path: root/files/zh-cn/web/javascript/reference/global_objects/generator/next
diff options
context:
space:
mode:
authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
commit33058f2b292b3a581333bdfb21b8f671898c5060 (patch)
tree51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/javascript/reference/global_objects/generator/next
parent8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff)
downloadtranslated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.gz
translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.bz2
translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.zip
initial commit
Diffstat (limited to 'files/zh-cn/web/javascript/reference/global_objects/generator/next')
-rw-r--r--files/zh-cn/web/javascript/reference/global_objects/generator/next/index.html165
1 files changed, 165 insertions, 0 deletions
diff --git a/files/zh-cn/web/javascript/reference/global_objects/generator/next/index.html b/files/zh-cn/web/javascript/reference/global_objects/generator/next/index.html
new file mode 100644
index 0000000000..96ad60c35c
--- /dev/null
+++ b/files/zh-cn/web/javascript/reference/global_objects/generator/next/index.html
@@ -0,0 +1,165 @@
+---
+title: Generator.prototype.next()
+slug: Web/JavaScript/Reference/Global_Objects/Generator/next
+tags:
+ - ECMAScript 2015
+ - Generator
+ - JavaScript
+ - 原型
+ - 参考
+ - 方法
+ - 生成器
+translation_of: Web/JavaScript/Reference/Global_Objects/Generator/next
+---
+<div>{{JSRef}}</div>
+
+<p><code><strong>next</strong></code><strong><code>()</code></strong> 方法返回一个包含属性 <code>done</code> 和 <code>value</code> 的对象。该方法也可以通过接受一个参数用以向生成器传值。</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox"><code><var>gen</var>.next(value)</code></pre>
+
+<h3 id="Parameters" name="Parameters">参数</h3>
+
+<dl>
+ <dt><code>value</code></dt>
+ <dd>向生成器传递的值.</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p>返回的<code><a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">对象</a></code>包含两个属性:</p>
+
+<ul>
+ <li><code>done</code> (布尔类型)
+
+ <ul>
+ <li>如果迭代器超过迭代序列的末尾,则值为 <code>true</code>。 在这种情况下,<code>value</code>可选地指定迭代器的返回值。</li>
+ <li>如果迭代器能够生成序列中的下一个值,则值为<code>false</code>。 这相当于没有完全指定<code>done</code>属性。</li>
+ </ul>
+ </li>
+ <li><code>value</code> - 迭代器返回的任意的Javascript值。当 <code>done</code> 的值为 <code>true </code>时可以忽略该值。</li>
+</ul>
+
+<h2 id="示例">示例</h2>
+
+<h3 id="Example_Using_test" name="Example:_Using_test">使用 <code>next()方法</code></h3>
+
+<p>下面的例子展示了一个简单的生成器, 以及调用 <code>next</code> 后方法的返回值:</p>
+
+<pre class="brush: js">function* gen() {
+ yield 1;
+ yield 2;
+ yield 3;
+}
+
+var g = gen(); // "Generator { }"
+g.next(); // "Object { value: 1, done: false }"
+g.next(); // "Object { value: 2, done: false }"
+g.next(); // "Object { value: 3, done: false }"
+g.next(); // "Object { value: undefined, done: true }"
+</pre>
+
+<h3 id="向生成器传值">向生成器传值</h3>
+
+<p>在此示例中,使用值调用<code>next</code>。 请注意,第一次调用没有记录任何内容,因为生成器最初没有产生任何结果。</p>
+
+<pre><code>function* gen() {
+ while(true) {
+ var value = yield null;
+ console.log(value);
+ }
+}
+
+var g = gen();
+g.next(1);
+// "{ value: null, done: false }"
+g.next(2);
+// 2
+// "{ value: null, done: false }"</code>
+</pre>
+
+<h2 id="Specifications" name="Specifications">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">Specification</th>
+ <th scope="col">Status</th>
+ <th scope="col">Comment</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES6', '#sec-generator.prototype.next', 'Generator.prototype.next')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td>初始定义</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-generator.prototype.next', 'Generator.prototype.next')}}</td>
+ <td>{{Spec2('ESDraft')}}</td>
+ <td>草案</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">浏览器兼容性</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div>
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Feature</th>
+ <th>Chrome</th>
+ <th>Edge</th>
+ <th>Firefox (Gecko)</th>
+ <th>Internet Explorer</th>
+ <th>Opera</th>
+ <th>Safari</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>13</td>
+ <td>{{CompatGeckoDesktop(26)}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatSafari(10)}}</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>5.1</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatGeckoMobile(26)}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>10</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+</div>
+
+<h2 id="See_also" name="See_also">相关链接</h2>
+
+<ul>
+ <li><code><a href="/en-US/docs/Web/JavaScript/Reference/Statements/function*">function*</a></code></li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators">Iterators and generators</a></li>
+</ul>