JavaScript错误处理之分析 Uncaught(in promise) error的原因及解决方案

new Promise((resolve, reject) => {
  // 异步操作
  if (success) {
    resolve(result);
  } else {
    reject(error);
  }
}).then((result) => {
  // 处理异步操作结果（成功后的）
}).catch((error) => {
  // 处理异步操作错误（有异常的）
});

export function addAlarmRule(data) {
	return request({
		url: '/device/rule',
		method: 'post',
		data: data
	});
}

/** 提交按钮 */
submitForm: function() {
	this.$refs['form'].validate(valid => {
		if(valid) {
			if(this.form.ruleId !== undefined) {
				updateAlarmRule(this.form).then(response => {
					this.$modal.msgSuccess('修改成功');
					this.open = false;
					this.reload();
				});
			}else {
				addAlarmRule(this.form).then(response => {
					this.$modal.msgSuccess('新增成功');
					this.open = false;
					this.reload();
				});
			}
		}
	});
}

const promise = new Promise((resolve, reject) => {
  reject('error');
});

const promise = new Promise((resolve, reject) => {
  reject('error');
}).catch((error) => {
  console.log(error);
});

export async function addAlarmRule(data) {
	const res = await request({
		url: '/device/rule',
		method: 'post',
		data: data
	});
	if(res.code === 200) {
		return res.data;
	}
	return Promise.reject(new Error(res.message));
}

/** 提交按钮 */
submitForm: function() {
	this.$refs['form'].validate(valid => {
		if(valid) {
			if(this.form.ruleId !== undefined) {
				updateAlarmRule(this.form).then(response => {
					this.$modal.msgSuccess('修改成功');
					this.open = false;
					this.reload();
				}).catch((e) => {
					this.$message.error(e.message);
				});
			}else {
				addAlarmRule(this.form).then(response => {
					this.$modal.msgSuccess('新增成功');
					this.open = false;
					this.reload();
				}).catch((e) => {
					this.$message.error(e.message);
				});
			}
		}
	});
}

async function asyncFunction() {
  try {
    const promise = new Promise((resolve, reject) => {
      reject('error');
    });
    const result = await promise;
  } catch (error) {
    console.log(error);
  }
}

window.addEventListener('unhandledrejection', (event) => {
  console.log(event.reason);
});