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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/global_objects/string/tostring | |
parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
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Diffstat (limited to 'files/zh-cn/web/javascript/reference/global_objects/string/tostring')
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diff --git a/files/zh-cn/web/javascript/reference/global_objects/string/tostring/index.html b/files/zh-cn/web/javascript/reference/global_objects/string/tostring/index.html new file mode 100644 index 0000000000..192ae75b12 --- /dev/null +++ b/files/zh-cn/web/javascript/reference/global_objects/string/tostring/index.html @@ -0,0 +1,124 @@ +--- +title: String.prototype.toString() +slug: Web/JavaScript/Reference/Global_Objects/String/toString +translation_of: Web/JavaScript/Reference/Global_Objects/String/toString +--- +<div>{{JSRef("Global_Objects", "String")}}</div> + +<h2 id="Summary" name="Summary">概述</h2> + +<p><code><strong>toString()</strong></code> 方法返回指定对象的字符串形式。</p> + +<h2 id="Syntax" name="Syntax">语法</h2> + +<pre class="syntaxbox"><code><em>str</em>.toString()</code> +</pre> + +<h3 id="返回值">返回值</h3> + +<p>一个表示调用对象的字符串。</p> + +<h2 id="Description" name="Description">描述</h2> + +<p><code>String</code> 对象覆盖了{{jsxref("Global_Objects/Object", "Object")}} 对象的 <code>toString</code> 方法;并没有继承 {{jsxref("Object.toString()")}}。对于 <code>String</code> 对象,<code>toString</code> 方法返回该对象的字符串形式,和 {{jsxref("String.prototype.valueOf()")}} 方法返回值一样。</p> + +<h2 id="Examples" name="Examples">示例</h2> + +<h3 id="Example_Using_toString" name="Example:_Using_toString">例子:使用 <code>toString</code></h3> + +<p>下例输出一个字符串对象(String object)的字符串值:</p> + +<pre class="brush:js">var x = new String("Hello world"); + +alert(x.toString()) // 输出 "Hello world"</pre> + +<h2 id="规范">规范</h2> + +<table> + <tbody> + <tr> + <th scope="col">Specification</th> + <th scope="col">Status</th> + <th scope="col">Comment</th> + </tr> + <tr> + <td>{{SpecName('ES3')}}</td> + <td>{{Spec2('ES3')}}</td> + <td>Initial definition. Implemented in JavaScript 1.1.</td> + </tr> + <tr> + <td>{{SpecName('ES5.1', '#sec-15.5.4.2', 'String.prototype.toString')}}</td> + <td>{{Spec2('ES5.1')}}</td> + <td></td> + </tr> + <tr> + <td>{{SpecName('ES6', '#sec-string.prototype.tostring', 'String.prototype.toString')}}</td> + <td>{{Spec2('ES6')}}</td> + <td></td> + </tr> + <tr> + <td>{{SpecName('ESDraft', '#sec-string.prototype.tostring', 'String.prototype.toString')}}</td> + <td>{{Spec2('ESDraft')}}</td> + <td></td> + </tr> + </tbody> +</table> + +<h2 id="浏览器兼容性">浏览器兼容性</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>{{ 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("Object.prototype.toSource()")}}</li> + <li>{{jsxref("String.prototype.valueOf()")}}</li> +</ul> |