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diff --git a/files/zh-cn/web/javascript/reference/global_objects/referenceerror/index.html b/files/zh-cn/web/javascript/reference/global_objects/referenceerror/index.html new file mode 100644 index 0000000000..1d42786c00 --- /dev/null +++ b/files/zh-cn/web/javascript/reference/global_objects/referenceerror/index.html @@ -0,0 +1,168 @@ +--- +title: ReferenceError +slug: Web/JavaScript/Reference/Global_Objects/ReferenceError +translation_of: Web/JavaScript/Reference/Global_Objects/ReferenceError +--- +<div>{{JSRef("Global_Objects", "Error", "EvalError,InternalError,RangeError,ReferenceError,SyntaxError,TypeError,URIError")}}</div> + +<h2 id="Summary" name="Summary">概述</h2> + +<p><code><strong>ReferenceError(引用错误)</strong></code> 对象代表当一个不存在的变量被引用时发生的错误。</p> + +<h2 id="Syntax" name="Syntax">语法</h2> + +<pre class="syntaxbox"><code>new ReferenceError([<var>message</var>[, <var>fileName</var>[, <var>lineNumber</var>]]])</code></pre> + +<h3 id="Parameters" name="Parameters">参数</h3> + +<dl> + <dt><code>message</code></dt> + <dd>可选。描述可读的错误信息</dd> + <dt><code>fileName</code> {{non-standard_inline}}</dt> + <dd>可选。包含引起异常代码的文件名</dd> + <dt><code>lineNumber</code> {{non-standard_inline}}</dt> + <dd>可选。引起异常的代码行号</dd> +</dl> + +<h2 id="Description" name="Description">描述</h2> + +<p>当你尝试引用一个未被定义的变量时,将会抛出一个 <code>ReferenceError</code> 。</p> + +<h2 id="Properties" name="Properties">属性</h2> + +<dl> + <dt>{{jsxref("ReferenceError.prototype")}}</dt> + <dd>Allows the addition of properties to an <code>ReferenceError</code> object.</dd> +</dl> + +<h2 id="Methods" name="Methods">方法</h2> + +<p>全局的 <code>ReferenceError</code> 本身并不包含有方法,但是他可以从原型链上继承一些方法</p> + +<h2 id="ReferenceError_instances" name="ReferenceError_instances"><code>ReferenceError</code> 实例</h2> + +<h3 id="Properties_of_ReferenceError_instances" name="Properties_of_ReferenceError_instances">属性</h3> + +<div>{{page('/en-US/docs/Web/JavaScript/Reference/Global_Objects/ReferenceError/prototype', 'Properties')}}</div> + +<h3 id="Methods_of_ReferenceError_instances" name="Methods_of_ReferenceError_instances">方法</h3> + +<div>{{page('/en-US/docs/Web/JavaScript/Reference/Global_Objects/ReferenceError/prototype', 'Methods')}}</div> + +<h2 id="Examples" name="Examples">例子</h2> + +<h3 id="Example:_Catch_an_ReferenceError" name="Example:_Catch_an_ReferenceError">例: 捕获一个 <code>ReferenceError</code></h3> + +<pre class="brush: js">try { + var a = undefinedVariable; +} catch (e) { + console.log(e instanceof ReferenceError); // true + console.log(e.message); // "undefinedVariable is not defined" + console.log(e.name); // "ReferenceError" + console.log(e.fileName); // "Scratchpad/1" + console.log(e.lineNumber); // 2 + console.log(e.columnNumber); // 6 + console.log(e.stack); // "@Scratchpad/2:2:7\n" +} +</pre> + +<h3 id="Example:_Create_an_ReferenceError" name="Example:_Create_an_ReferenceError">例: 创建一个 <code>ReferenceError</code></h3> + +<pre class="brush: js">try { + throw new ReferenceError('Hello', 'someFile.js', 10); +} catch (e) { + console.log(e instanceof ReferenceError); // true + console.log(e.message); // "Hello" + console.log(e.name); // "ReferenceError" + console.log(e.fileName); // "someFile.js" + console.log(e.lineNumber); // 10 + console.log(e.columnNumber); // 0 + console.log(e.stack); // "@Scratchpad/2:2:9\n" +} +</pre> + +<h2 id="规范">规范</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">规范</th> + <th scope="col">状态</th> + <th scope="col">说明</th> + </tr> + <tr> + <td>ECMAScript 3rd Edition.</td> + <td>Standard</td> + <td>Initial definition.</td> + </tr> + <tr> + <td>{{SpecName('ES5.1', '#sec-15.11.6.3', 'ReferenceError')}}</td> + <td>{{Spec2('ES5.1')}}</td> + <td> </td> + </tr> + <tr> + <td>{{SpecName('ES6', '#sec-native-error-types-used-in-this-standard-referenceerror', 'ReferenceError')}}</td> + <td>{{Spec2('ES6')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="浏览器兼容性">浏览器兼容性</h2> + +<div>{{CompatibilityTable}}</div> + +<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>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</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>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<h2 id="See_also" name="See_also">相关链接</h2> + +<ul> + <li>{{jsxref("Error")}}</li> + <li>{{jsxref("ReferenceError.prototype")}}</li> +</ul> |