Question

我们可以将express4与underscore.js一起使用吗？

我想在index.ejs

中打印变量“name”

有可能吗？

在underscore.js功能中Express4是否有另一种方法可以与node.js一起使用？

PS：underscore.js，express4（engine ejs）

index.ejs

<!DOCTYPE html>
<html>
  <head>
    <title><%= title %></title>
    <link rel='stylesheet' href='/stylesheets/style.css' />
  </head>
  <body>

  <h1><%= title %></h1>

    <p>Welcome to <%= title %></p>
  <h1><%= name %></h1>
  </body>
</html>

index.js

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

/* GET home page. */
router.get('/', function(req, res) {

   _.template("hello: <%= name %>");  

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

});

module.exports = router;

app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var routes = require('./routes/index');
var users = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', routes);
app.use('/users', users);





// catch 404 and forward to error handler
app.use(function(req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});


module.exports = app;

Answer 1

对于节点js，您应该使用下划线的包装程序包 - Lo-Dash

安装：

npm i --save lodash

用法：

var _ = require('lodash/dist/lodash.underscore');

_.map([1, 2, 3], function(n) { return n * 3; });
// → [3, 6, 9]

我们可以使用带有underscore.js的express4吗？

1 个答案: