Document:readystatechange 事件
当文档的 readyState
属性发生改变时,会触发 readystatechange
事件。
是否冒泡 | 否 |
---|---|
是否可取消 | 否 |
接口 | Event |
Event handler 属性 | onreadystatechange |
示例
实时演示
HTML
html
<div class="controls">
<button id="reload" type="button">Reload</button>
</div>
<div class="event-log">
<label>Event log:</label>
<textarea readonly class="event-log-contents" rows="8" cols="30"></textarea>
</div>
JavaScript
js
const log = document.querySelector(".event-log-contents");
const reload = document.querySelector("#reload");
reload.addEventListener("click", () => {
log.textContent = "";
window.setTimeout(() => {
window.location.reload(true);
}, 200);
});
window.addEventListener("load", (event) => {
log.textContent = log.textContent + "load\n";
});
document.addEventListener("readystatechange", (event) => {
log.textContent = log.textContent + `readystate: ${document.readyState}\n`;
});
document.addEventListener("DOMContentLoaded", (event) => {
log.textContent = log.textContent + `DOMContentLoaded\n`;
});
结果
规范
Specification |
---|
HTML Standard # event-readystatechange |
浏览器兼容性
BCD tables only load in the browser