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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:17 -0500 |
commit | da78a9e329e272dedb2400b79a3bdeebff387d47 (patch) | |
tree | e6ef8aa7c43556f55ddfe031a01cf0a8fa271bfe /files/ko/web/api/nodelist/foreach/index.html | |
parent | 1109132f09d75da9a28b649c7677bb6ce07c40c0 (diff) | |
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diff --git a/files/ko/web/api/nodelist/foreach/index.html b/files/ko/web/api/nodelist/foreach/index.html new file mode 100644 index 0000000000..b12325d134 --- /dev/null +++ b/files/ko/web/api/nodelist/foreach/index.html @@ -0,0 +1,118 @@ +--- +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 && !NodeList.prototype.forEach) { + NodeList.prototype.forEach = function (callback, thisArg) { + thisArg = thisArg || window; + for (var i = 0; i < this.length; i++) { + callback.call(thisArg, this[i], i, this); + } + }; +}</pre> + +<p>또는</p> + +<pre class="brush: js">if (window.NodeList && !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> |