sql.js是SQLite到Webassembly的一个端口，通过使用Emscripten编译SQLite C代码。它使用存储在内存中的虚拟数据库文件，因此不会保留对数据库所做的更改。但是，它允许您导入任何现有的sqlite文件，并将创建的数据库导出为JavaScript类型的数组。

这里没有C绑定或node-gyp编译，sql.js是一个简单的JavaScript文件，可以像任何传统的JavaScript库一样使用。如果您使用JavaScript构建本机应用程序（例如使用Electron），或者在node.js中工作，您可能更喜欢使用SQLite的本机绑定到JavaScript。

Sql.js早于WebAssembly，因此作为asm.js项目启动。它仍然支持asm.js以实现向后兼容性。

用法

var initSqlJs = require('sql.js');
// or if you are in a browser:
// var initSqlJs = window.initSqlJs;

initSqlJs().then(SQL => {

  // Create a database
  var db = new SQL.Database();
  // NOTE: You can also use new SQL.Database(data) where
  // data is an Uint8Array representing an SQLite database file

  // Execute some sql
  sqlstr = "CREATE TABLE hello (a int, b char);";
  sqlstr += "INSERT INTO hello VALUES (0, 'hello');"
  sqlstr += "INSERT INTO hello VALUES (1, 'world');"
  db.run(sqlstr); // Run the query without returning anything

  var res = db.exec("SELECT * FROM hello");
  /*
  [
    {columns:['a','b'], values:[[0,'hello'],[1,'world']]}
  ]
  */

  // Prepare an sql statement
  var stmt = db.prepare("SELECT * FROM hello WHERE a=:aval AND b=:bval");

  // Bind values to the parameters and fetch the results of the query
  var result = stmt.getAsObject({':aval' : 1, ':bval' : 'world'});
  console.log(result); // Will print {a:1, b:'world'}

  // Bind other values
  stmt.bind([0, 'hello']);
  while (stmt.step()) console.log(stmt.get()); // Will print [0, 'hello']

  // You can also use JavaScript functions inside your SQL code
  // Create the js function you need
  function add(a, b) {return a+b;}
  // Specifies the SQL function's name, the number of it's arguments, and the js function to use
  db.create_function("add_js", add);
  // Run a query in which the function is used
  db.run("INSERT INTO hello VALUES (add_js(7, 3), add_js('Hello ', 'world'));"); // Inserts 10 and 'Hello world'

  // free the memory used by the statement
  stmt.free();
  // You can not use your statement anymore once it has been freed.
  // But not freeing your statements causes memory leaks. You don't want that.

  // Export the database to an Uint8Array containing the SQLite database file
  var binaryArray = db.export();
});

链接: https://fly63.com/nav/2665