var is_uploading = false;
function alert_if_uploading() {
if (is_uploading)
return '文件正在上传中,您确定要离开当前页面?';
}
window.onbeforeunload = alert_if_uploading;
核心代码就是监听window的onbeforeunload事件。
var is_uploading = false;
function alert_if_uploading() {
if (is_uploading)
return '文件正在上传中,您确定要离开当前页面?';
}
window.onbeforeunload = alert_if_uploading;
核心代码就是监听window的onbeforeunload事件。