From da78a9e329e272dedb2400b79a3bdeebff387d47 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:42:17 -0500
Subject: initial commit

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+---
+title: NodeList.prototype.forEach()
+slug: Web/API/NodeList/forEach
+translation_of: Web/API/NodeList/forEach
+---
+<p>{{APIRef("DOM")}}</p>
+
+<p>{{domxref("NodeList")}} 인터페이스의 <strong><code>forEach()</code></strong> 메서드는 리스트 내의 각각의 값 쌍에 대해 매개 변수에 지정된 콜백을 삽입 순서로 호출합니다.</p>
+
+<h2 id="문법Syntax">문법Syntax</h2>
+
+<pre class="syntaxbox"><em>NodeList.</em>forEach<em>(callback[, thisArg]);</em>
+</pre>
+
+<h3 id="Parameters">Parameters</h3>
+
+<dl>
+ <dt><code>callback</code></dt>
+ <dd>각각의 요소에 대해 실행하는 함수로, 3개의 인수(arguments)를 갖습니다:
+ <dl>
+  <dt><em><code>currentValue</code></em></dt>
+  <dd>NodeList에서 처리중인 현재 요소(element)입니다.</dd>
+  <dt><code><em>currentIndex</em></code></dt>
+  <dd>NodeList에서 처리중인 현재 요소의 인덱스입니다.</dd>
+  <dt><em><code>listObj</code></em></dt>
+  <dd><code>forEach()</code> 가 적용되고 있는 NodeList 객체입니다. </dd>
+ </dl>
+ </dd>
+ <dt><code>thisArg</code><code> {{Optional_inline}}</code></dt>
+ <dd><code>callback</code> 을 실행할 때 {{jsxref("this")}} 에 대입할 값입니다.</dd>
+</dl>
+
+<h3 id="Return_value">Return value</h3>
+
+<p>{{jsxref('undefined')}}.</p>
+
+<h2 id="Exceptions">Exceptions</h2>
+
+<p><em>None</em>.</p>
+
+<h2 id="Example">Example</h2>
+
+<pre class="brush: js;highlight:[6]">var node = document.createElement("div");
+var kid1 = document.createElement("p");
+var kid2 = document.createTextNode("hey");
+var kid3 = document.createElement("span");
+
+node.appendChild(kid1);
+node.appendChild(kid2);
+node.appendChild(kid3);
+
+var list = node.childNodes;
+
+list.forEach(
+  function(currentValue, currentIndex, listObj) {
+    console.log(currentValue + ', ' + currentIndex + ', ' + this);
+  },
+  'myThisArg'
+);</pre>
+
+<p>결과는 다음과 같습니다.</p>
+
+<pre>[object HTMLParagraphElement], 0, myThisArg
+[object Text], 1, myThisArg
+[object HTMLSpanElement], 2, myThisArg</pre>
+
+<h2 id="Polyfill">Polyfill</h2>
+
+<p>이 {{Glossary("Polyfill","polyfill")}} 은 <a href="https://caniuse.com/#search=es5">ES5</a> 를 지원하는 모든 브라우저에서 동작합니다:</p>
+
+<pre class="brush: js">if (window.NodeList &amp;&amp; !NodeList.prototype.forEach) {
+    NodeList.prototype.forEach = function (callback, thisArg) {
+        thisArg = thisArg || window;
+        for (var i = 0; i &lt; this.length; i++) {
+            callback.call(thisArg, this[i], i, this);
+        }
+    };
+}</pre>
+
+<p>또는</p>
+
+<pre class="brush: js">if (window.NodeList &amp;&amp; !NodeList.prototype.forEach) {
+    NodeList.prototype.forEach = Array.prototype.forEach;
+}</pre>
+
+<p>The above behavior is how many browsers actually implement NodeList.prototype.forEach (Chrome, for example).</p>
+
+<h2 id="Specifications">Specifications</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName("WebIDL", "#es-forEach", "forEach")}}</td>
+   <td>{{Spec2("WebIDL")}}</td>
+   <td>Defines <code>forEach</code> on <code>iterable</code> declarations</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_Compatibility">Browser Compatibility</h2>
+
+
+
+<p>{{Compat("api.NodeList.forEach")}}</p>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li>{{domxref("Node")}}</li>
+ <li>{{domxref("NodeList")}}</li>
+</ul>
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