The gist In Node.js, __dirname is always the directory in which the currently executing script resides (see this). So if you typed __dirname into /d1/d2/myscript.js, the value would be /d1/d2. By contrast, . gives you the directory from which you ran the node command in your terminal window (i.e. your working directory) when you use libraries like path and fs. Technically, it starts out as your working directory … Read more
You should avoid using refs, you can do it with onChange function. On every change, update the state for the changed field. Then you can easily check if that field is empty or whatever else you want. You could do something as follows : In this example I did the validation only for email and name, but … Read more
Run these commands in a terminal window:
If I remember correctly, there is a strict standard limit for the memory usage in V8 of around 1.7 GB, if you do not increase it manually. In one of our products we followed this solution in our deploy script: There would also be a new space command but as I read here: a-tour-of-v8-garbage-collection the new space … Read more
If you have npm version 5 or above, try this first: Otherwise: My node and npm versions are:
This is my the app, I’m currently running on production. However, I came to know about NODE_ENV and want to use it. How can I do this?
Using npm install installs the module into the current directory only (in a subdirectory called node_modules). Is app.js located under home/dave/src/server/? If not and you want to use the module from any directory, you need to install it globally using npm install -g. I usually install most packages locally so that they get checked in along with my project code. … Read more
I think you’re missing your routes, you need to define at least one route for example ‘/’ to index. e.g.
This is over simplifying it, but Express.js is to Node.js what Ruby on Rails or Sinatra is to Ruby. Express 3.x is a light-weight web application framework to help organize your web application into an MVC architecture on the server side. You can use a variety of choices for your templating language (like EJS, Jade, and Dust.js). You can then use a database like MongoDB with Mongoose (for modeling) to provide … Read more
It’s part of the ES6 module system, described here. There is a helpful example in that documentation, also: If a module defines a default export: then you can import that default export by omitting the curly braces: Update: As of June 2015, the module system is defined in §15.2 and the export syntax in particular … Read more