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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/javascript/reference/statements/debugger/index.html | |
parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
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diff --git a/files/zh-cn/web/javascript/reference/statements/debugger/index.html b/files/zh-cn/web/javascript/reference/statements/debugger/index.html new file mode 100644 index 0000000000..664e35af1e --- /dev/null +++ b/files/zh-cn/web/javascript/reference/statements/debugger/index.html @@ -0,0 +1,79 @@ +--- +title: debugger +slug: Web/JavaScript/Reference/Statements/debugger +tags: + - JavaScript + - Statement +translation_of: Web/JavaScript/Reference/Statements/debugger +--- +<p>{{jsSidebar("Statements")}}</p> + +<p><strong>debugger 语句</strong>调用任何可用的调试功能,例如设置断点。 如果没有调试功能可用,则此语句不起作用。</p> + +<h2 id="语法">语法</h2> + +<pre class="syntaxbox" style="font-size: 14px; white-space: normal;"><code>debugger;</code> +</pre> + +<h2 id="示例">示例</h2> + +<p>下面的例子演示了一个包含 debugger 语句的函数,当函数被调用时,会尝试调用一个可用的调试器进行调试。</p> + +<pre class="brush:js language-js" style="padding: 1em 0px 1em 30px; font-size: 14px; white-space: normal; color: rgb(77, 78, 83);"><code class="language-js" style="direction: ltr; white-space: pre;"><span class="keyword token" style="color: #0077aa;">function</span> <span class="function token" style="color: #dd4a68;">potentiallyBuggyCode<span class="punctuation token" style="color: #999999;">(</span></span><span class="punctuation token" style="color: #999999;">)</span> <span class="punctuation token" style="color: #999999;">{</span> + <span class="keyword token" style="color: #0077aa;">debugger</span><span class="punctuation token" style="color: #999999;">;</span> + <span class="comment token" style="color: #708090;"> // do potentially buggy stuff to examine, step through, etc. +</span><span class="punctuation token" style="color: #999999;">}</span></code></pre> + +<p>当 debugger 被调用时, 执行暂停在 debugger 语句的位置。就像在脚本源代码中的断点一样。</p> + +<p><a href="https://mdn.mozillademos.org/files/6963/Screen%20Shot%202014-02-07%20at%209.14.35%20AM.png"><img alt="Paused at a debugger statement." src="https://mdn.mozillademos.org/files/6963/Screen%20Shot%202014-02-07%20at%209.14.35%20AM.png" style="height: 371px; width: 700px;"></a></p> + +<h2 id="规范">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('ESDraft', '#sec-debugger-statement', 'Debugger statement')}}</td> + <td>{{Spec2('ESDraft')}}</td> + <td> </td> + </tr> + <tr> + <td>{{SpecName('ES6', '#sec-debugger-statement', 'Debugger statement')}}</td> + <td>{{Spec2('ES6')}}</td> + <td> </td> + </tr> + <tr> + <td>{{SpecName('ES5.1', '#sec-12.15', 'Debugger statement')}}</td> + <td>{{Spec2('ES5.1')}}</td> + <td>Initial definition</td> + </tr> + <tr> + <td>{{SpecName('ES3', '#sec-7.5.3', 'Debugger statement')}}</td> + <td>{{Spec2('ES3')}}</td> + <td> </td> + </tr> + <tr> + <td>{{SpecName('ES1', '#sec-7.4.3', 'Debugger statement')}}</td> + <td>{{Spec2('ES1')}}</td> + <td>Only mentioned as reserved word.</td> + </tr> + </tbody> +</table> + +<h2 id="浏览器兼容">浏览器兼容</h2> + +<div class="hidden">The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</div> + +<p>{{Compat("javascript.statements.debugger")}}</p> + +<h2 id="See_also" name="See_also">相关链接</h2> + +<ul> + <li><a href="https://developer.mozilla.org/en-US/docs/Debugging_JavaScript">JavaScript调试</a></li> + <li><a href="https://developer.mozilla.org/en-US/docs/Tools/Debugger">在火狐开发者工具中调试</a></li> +</ul> |