res.render(view [, locals] [, callback])

呈现 view 并将呈现的 HTML 字符串发送到客户端。可选参数:

Renders a view and sends the rendered HTML string to the client. Optional parameters:

  • locals,一个对象,其属性定义视图的局部变量。

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  • callback,回调函数。如果提供,该方法将返回可能的错误和呈现的字符串,但不执行自动响应。当发生错误时,该方法在内部调用 next(err)

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// send the rendered view to the client
res.render('index')

// if a callback is specified, the rendered HTML string has to be sent explicitly
res.render('index', (err, html) => {
  res.send(html)
})

// pass a local variable to the view
res.render('user', { name: 'Tobi' }, (err, html) => {
  // ...
})