从严格的HTML和JavaScript网站访问数据库的最佳方法是什么？

We are creating a website, and we are currently only using HTML5 and javascript. We need to be able to both read from and write to a database. We are using a postgressql database. What is your recommendation on how to go about querying the database? We are open to using other languages with our HTML and javascript to make this happen.We are creating a website, and we are currently