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+---
+title: 'Document: readystatechange event'
+slug: Web/API/Document/readystatechange_event
+translation_of: Web/API/Document/readystatechange_event
+---
+<div>{{APIRef}}</div>
+
+<p><strong><code>readystatechange</code></strong> 이벤트는 현재 페이지의 {{domxref("Document.readyState", "readyState")}}  속성값이 변할 때 발생한다.</p>
+
+<table class="properties">
+ <tbody>
+  <tr>
+   <th scope="row">Bubbles</th>
+   <td>No</td>
+  </tr>
+  <tr>
+   <th scope="row">Cancelable</th>
+   <td>No</td>
+  </tr>
+  <tr>
+   <th scope="row">Interface</th>
+   <td>{{domxref("Event")}}</td>
+  </tr>
+  <tr>
+   <th scope="row">Event handler property</th>
+   <td><code>onreadystatechange</code></td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Examples">Examples</h2>
+
+<h3 id="Live_example">Live example</h3>
+
+<h4 id="HTML">HTML</h4>
+
+<pre class="brush: html">&lt;div class="controls"&gt;
+  &lt;button id="reload" type="button"&gt;Reload&lt;/button&gt;
+&lt;/div&gt;
+
+&lt;div class="event-log"&gt;
+  &lt;label&gt;Event log:&lt;/label&gt;
+  &lt;textarea readonly class="event-log-contents" rows="8" cols="30"&gt;&lt;/textarea&gt;
+&lt;/div&gt;</pre>
+
+<div class="hidden">
+<h4 id="CSS">CSS</h4>
+
+<pre class="brush: css">body {
+  display: grid;
+  grid-template-areas: "control  log";
+}
+
+.controls {
+  grid-area: control;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.event-log {
+  grid-area: log;
+}
+
+.event-log-contents {
+  resize: none;
+}
+
+label, button {
+  display: block;
+}
+
+#reload {
+  height: 2rem;
+}
+
+</pre>
+</div>
+
+<h4 id="JS">JS</h4>
+
+<pre class="brush: js">const log = document.querySelector('.event-log-contents');
+const reload = document.querySelector('#reload');
+
+reload.addEventListener('click', () =&gt; {
+  log.textContent ='';
+  window.setTimeout(() =&gt; {
+      window.location.reload(true);
+  }, 200);
+});
+
+window.addEventListener('load', (event) =&gt; {
+    log.textContent = log.textContent + 'load\n';
+});
+
+document.addEventListener('readystatechange', (event) =&gt; {
+    log.textContent = log.textContent + `readystate: ${document.readyState}\n`;
+});
+
+document.addEventListener('DOMContentLoaded', (event) =&gt; {
+    log.textContent = log.textContent + `DOMContentLoaded\n`;
+});
+
+</pre>
+
+<h4 id="Result">Result</h4>
+
+<p>{{ EmbedLiveSample('Live_example', '100%', '160px') }}</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("HTML WHATWG", "indices.html#event-readystatechange", "readystatechange")}}</td>
+   <td>{{Spec2("HTML WHATWG")}}</td>
+   <td></td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("api.Document.readystatechange_event")}}</p>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li>Related events: <code><a href="/en-US/docs/Web/API/Document/DOMContentLoaded_event">DOMContentLoaded</a></code>, <code><a href="/en-US/docs/Web/API/Window/load_event">load</a></code>, <code><a href="/en-US/docs/Web/API/Window/beforeunload_event">beforeunload</a></code>, <code><a href="/en-US/docs/Web/API/Window/unload_event">unload</a></code></li>
+</ul>