Vue Promise 必须在外层，放到其它比如ElMessageBox，将不会返回任何值
当点击switch按钮之前，如果当更新后再刷新的效果不好，需要判断行为，然后再决定是否打开按钮。
正确如下：
return new Promise((resolve,reject) => {ElMessageBox.confirm('Hold?', 'Warning', {confirmButtonText: 'Yes',cancelButtonText: 'No',type: 'warning'}).then(() => {ElMessage.success('Switch success')return resolve(true)}).catch(() => {ElMessage.success('Hold Cancel')return reject(new Error('Error'))})})错误示例如下：
ElMessageBox.confirm('Release Hold?', 'Warning', {confirmButtonText: 'Yes',cancelButtonText: 'No',type: 'warning'}).then(() => {ElMessage.success('Release Switch success')isOpen.value = true}).catch(() => {return new Promise((resolve, reject) => {ElMessage.success('Release Cancel')isOpen.value = false})})