如何使用节点将HTML POST与Mongo连接

I am just making a simple blog application with Node, Express and MongoDB. I have a blogPost schema and I'm able to successfully GET and POST with Chrome's Postman. Now I am just trying to create a simple HTML form so I can create a blog post. But I'm not sure how to connect it with MongoDB. Below is some of the code. I am just making a simple blog application with