javascript - jQuery 函数不适用于 node.js 中的 express.js 路由

Question

我是 node.js 的新手。我的 express.js 应用程序结构:

| my-application
| -- app.js
| -- node_modules
| -- public
| -- models
     | -- users.js
| -- routes
     | -- index.js
| -- views
     | -- index.ejs

我尝试使用 $.inArray() 函数。我安装了https://www.npmjs.com/package/jquery包。

routes/index.js

var express  = require('express');
var $        = require('jquery');
var router   = express.Router();

router.get('/', function(req, res, next) {
  var arr = [ 'a','b','c' ];
  $.inArray('a',arr);

  res.render('index',{
      title:'home'
  });
});

module.exports = router;

它给我以下错误:

undefined is not a function
TypeError: undefined is not a function
at c:\Users\Ahmed Dinar\Dropbox\IdeaProjects\justoj\routes\index.js:12:7
at Layer.handle [as handle_request] (c:\Users\Ahmed Dinar\Dropbox     \IdeaProjects\justoj\node_modules\express\lib\router\layer.js:95:5)
at next (c:\Users\Ahmed Dinar\Dropbox\IdeaProjects\justoj\node_modules\express\lib\router\route.js:131:13)
at Route.dispatch (c:\Users\Ahmed Dinar\Dropbox\IdeaProjects\justoj\node_modules\express\lib\router\route.js:112:3)
at Layer.handle [as handle_request] (c:\Users\Ahmed Dinar\Dropbox\IdeaProjects\justoj\node_modules\express\lib\router\layer.js:95:5)
at c:\Users\Ahmed Dinar\Dropbox\IdeaProjects\justoj\node_modules\express\lib\router\index.js:277:22
at Function.process_params (c:\Users\Ahmed Dinar\Dropbox\IdeaProjects\justoj\node_modules\express\lib\router\index.js:330:12)
at next (c:\Users\Ahmed Dinar\Dropbox\IdeaProjects\justoj\node_modules\express\lib\router\index.js:271:10)
at Function.handle (c:\Users\Ahmed Dinar\Dropbox\IdeaProjects\justoj\node_modules\express\lib\router\index.js:176:3)
at router (c:\Users\Ahmed Dinar\Dropbox\IdeaProjects\justoj\node_modules\express\lib\router\index.js:46:12)

如何在我的模型中的路由中使用 jQuery 函数。

提前致谢。

Answer 1

jQuery 不能很好地与 Node JS 配合使用，我建议使用 Lodash - https://lodash.com/ .

var express  = require('express');
var _        = require('lodash');
var router   = express.Router();

router.get('/', function(req, res, next) {
  var arr = [ 'a','b','c' ];
  var inArray = _.indexOf('a',arr) > 0;

  res.render('index',{
      title:'home'
  });
});

module.exports = router;