---
title: Element.className
slug: Web/API/Element/className
translation_of: Web/API/Element/className
---
<div>{{APIRef("DOM")}}</div>

<h2 id="개요">개요</h2>

<p><strong>className</strong> 특정 엘리먼트의 클래스 속성의 값을 가져오거나 설정할 수 있다.</p>

<h2 id="문법">문법</h2>

<pre class="syntaxbox"><var>var cName</var> = <var>elementNodeReference</var>.className;
<var>elementNodeReference</var>.className = <var>cName</var>;</pre>

<ul>
 <li><var>cName은 현재 요소의 클래스 혹은 공백으로 구분된 클래스들을 표현하는 문자열 변수이다.</var></li>
</ul>

<h2 id="예제">예제</h2>

<pre class="brush: js">let elm = document.getElementById('item');

if(elm.className === 'active'){
    elm.className = 'inactive';
} else {
    elm.className = 'active';
}</pre>

<h2 id="Notes" name="Notes">주의</h2>

<p>많은 언어에서 DOM 조작을 위해 사용되는 "class " 키워드와의 혼란을 줄이기 위하여 class 대신 className이라는 프로퍼티 명을 사용한다.</p>

<h2 id="명세">명세</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">명세서</th>
   <th scope="col">상태</th>
   <th scope="col">주석</th>
  </tr>
  <tr>
   <td>{{SpecName("DOM WHATWG", "#dom-element-classname", "element.className")}}</td>
   <td>{{Spec2("DOM WHATWG")}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName("DOM4", "#dom-element-classname", "element.className")}}</td>
   <td>{{Spec2("DOM4")}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName("DOM2 HTML", "html.html#ID-95362176", "element.className")}}</td>
   <td>{{Spec2("DOM2 HTML")}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>

<h2 id="브라우저_호환성">브라우저 호환성</h2>

<p>{{CompatibilityTable}}</p>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Edge</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>
   <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>Edge</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>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="살펴보기">살펴보기</h2>

<ul>
 <li>{{domxref("element.classList")}}</li>
</ul>