error
当一个资源加载失败或无法使用时,会在Element
对象上触发error
事件。例如当脚本执行错误、或图片无法找到或图片无效时。
示例
在线示例
HTML
<div class="controls">
<button id="img-error" type="button">生成图像 error</button>
<img class="bad-img" />
</div>
<div class="event-log">
<label>Event log:</label>
<textarea readonly class="event-log-contents" rows="8" cols="30"></textarea>
</div>
JS
const log = document.querySelector('.event-log-contents');
const badImg = document.querySelector('.bad-img');
badImg.addEventListener('error', (event) => {
log.textContent = log.textContent + `${event.type}: Loading image\n`;
console.log(event)
});
const imgError = document.querySelector('#img-error');
imgError.addEventListener('click', () => {
badImg.setAttribute('src', 'i-dont-exist');
});
结果
规范
Specification |
---|
UI Events # event-type-error |
浏览器兼容性
BCD tables only load in the browser
参阅
- This event on
Window
targets:error
event