aboutsummaryrefslogtreecommitdiff
path: root/files/zh-cn/web/javascript/reference/global_objects/regexp/@@match/index.html
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/regexp/@@match/index.html
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/regexp/@@match/index.html')
-rw-r--r--files/zh-cn/web/javascript/reference/global_objects/regexp/@@match/index.html109
1 files changed, 109 insertions, 0 deletions
diff --git a/files/zh-cn/web/javascript/reference/global_objects/regexp/@@match/index.html b/files/zh-cn/web/javascript/reference/global_objects/regexp/@@match/index.html
new file mode 100644
index 0000000000..28b4431659
--- /dev/null
+++ b/files/zh-cn/web/javascript/reference/global_objects/regexp/@@match/index.html
@@ -0,0 +1,109 @@
+---
+title: 'RegExp.prototype[@@match]()'
+slug: Web/JavaScript/Reference/Global_Objects/RegExp/@@match
+tags:
+ - JavaScript
+ - RegExp
+ - 正则
+translation_of: Web/JavaScript/Reference/Global_Objects/RegExp/@@match
+---
+<div>{{JSRef}}</div>
+
+<p>对<em>正则表达式</em>匹配<em>字符串</em>时,<strong><code>[@@match]()</code></strong>方法用于获取匹配结果。</p>
+
+<p>{{EmbedInteractiveExample("pages/js/regexp-prototype-@@match.html")}}</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox"><var>regexp</var>[Symbol.match](str)</pre>
+
+<h3 id="参数">参数</h3>
+
+<dl>
+ <dt><code>str</code></dt>
+ <dd>match 的目标参数是{{jsxref("String")}}</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p>match 方法会返回一个数组,它包括整个匹配结果,和通过捕获组匹配到的结果,如果没有匹配到则返回null</p>
+
+<h2 id="描述">描述</h2>
+
+<p>这个方法在 {{jsxref("String.prototype.match()")}} 的内部调用。例如,下面的两个方法返回相同结果。</p>
+
+<pre class="brush: js">'abc'.match(/a/);
+
+/a/[Symbol.match]('abc');</pre>
+
+<p>这个方法为自定义 <code>RegExp</code> 子类中的匹配行为而存在。</p>
+
+<h2 id="示例">示例</h2>
+
+<h3 id="直接调用">直接调用</h3>
+
+<p>这个方法的使用方式和 {{jsxref("String.prototype.match()")}} 相同,不同之处是 <code>this</code> 和参数顺序。</p>
+
+<pre class="brush: js">var re = /[0-9]+/g;
+var str = '2016-01-02';
+var result = re[Symbol.match](str);
+console.log(result); // ["2016", "01", "02"]
+</pre>
+
+<h3 id="在子类中使用match">在子类中使用<code>@@match</code></h3>
+
+<p>{{jsxref("RegExp")}} 的子类可以覆写 <code>[@@match]()</code>方法来修改默认行为。</p>
+
+<pre class="brush: js">class MyRegExp extends RegExp {
+ [Symbol.match](str) {
+ var result = RegExp.prototype[Symbol.match].call(this, str);
+ if (!result) return null;
+ return {
+ group(n) {
+ return result[n];
+ }
+ };
+ }
+}
+
+var re = new MyRegExp('([0-9]+)-([0-9]+)-([0-9]+)');
+var str = '2016-01-02';
+var result = str.match(re); // String.prototype.match calls re[@@match].
+console.log(result.group(1)); // 2016
+console.log(result.group(2)); // 01
+console.log(result.group(3)); // 02
+</pre>
+
+<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-regexp.prototype-@@match', 'RegExp.prototype[@@match]')}}</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>
+
+<div>
+<p>{{Compat("javascript.builtins.RegExp.@@match")}}</p>
+</div>
+
+<h2 id="另见">另见</h2>
+
+<ul>
+ <li>{{jsxref("String.prototype.match()")}}</li>
+ <li>{{jsxref("RegExp.prototype.@@replace()", "RegExp.prototype[@@replace]()")}}</li>
+ <li>{{jsxref("RegExp.prototype.@@search()", "RegExp.prototype[@@search]()")}}</li>
+ <li>{{jsxref("RegExp.prototype.@@split()", "RegExp.prototype[@@split]()")}}</li>
+ <li>{{jsxref("RegExp.prototype.exec()")}}</li>
+ <li>{{jsxref("RegExp.prototype.test()")}}</li>
+</ul>