jQuery函数不在node.js中的express.js路由上工作

Question

我是node.js.My express.js应用程序结构的新手：

| 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。

路线/ 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;

它给了我以下错误：

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)

我如何在我的模型中的路由中使用jQuery函数。

提前致谢。

Answer 1

jQuery与Node JS不能很好地工作，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;

Answer 2

请记住，jquery需要一个文档窗口才能正常工作。
你也许可以使用jsdom ：

var jsdom = require("jsdom"),
    $     = require('jquery')(jsdom.jsdom().parentWindow);

看一眼：
错误：jQuery需要一个带文档的窗口