---
lang: en
title: 'API docs: express.executeexpressrequesthandler'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/strongloop/loopback-next/tree/master/packages/express
permalink: /doc/en/lb4/apidocs.express.executeexpressrequesthandler.html
---

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[Home](./index.md) &gt; [@loopback/express](./express.md) &gt; [executeExpressRequestHandler](./express.executeexpressrequesthandler.md)

## executeExpressRequestHandler() function

Execute an Express-style callback-based request handler.

<b>Signature:</b>

```typescript
export declare function executeExpressRequestHandler(handler: ExpressRequestHandler, request: Request, response: Response): Promise<boolean>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  handler | [ExpressRequestHandler](./express.expressrequesthandler.md) | Express middleware handler function |
|  request | Request |  |
|  response | Response |  |

<b>Returns:</b>

Promise&lt;boolean&gt;

A promise resolved to: - `true` when the request was handled - `false` when the handler called `next()` to proceed to the next handler (middleware) in the chain.


