HTML5提供的客户端数据存储方式

• Web Storage
  • localStorage
  • sessionStorage
• Web SQL Database

Web SQL Database

The Web SQL Database spec gives developers a simple but powerful JavaScript database API to store persistent data in a local SQLite database.

'INSERT INTO entries (date, calories, food) VALUES (?, ?, ?);', This is the statement that will be executed. The question marks are data placeholders.

[date, calories, food], This is an array of the values being sent to the database. They correspond by position with the data placeholder question marks in the SQL statement.