Install node. js, NPM, Express in a Mac environment

One: node. js Ann Turns

Method One: Download the node. js for Mac

Address: http://nodejs.org/download/

Download the pkg directly, double-click the installation, all the way to next, it is easy to get it done.

The installation will alert you that the path to node and NPM is/usr/local/bin.

Method Two: Install with homebrew

1. Installing homebrew

Homebrew installation is very simple, open the terminal copy, paste the following command, enter, done.

Ruby-e "$ (curl-fssl https://raw.githubusercontent.com/Homebrew/install/master/install)"

Homebrew Installation Nodejs

Brew Install Nodejs

currently the latest node. JS installation is complete including NPM , tested for installation success

luoyindemacbook-pro:~ luoyin$ node-vv5.1.0luoyindemacbook-pro:~ luoyin$ npm-v3.3.12

See version, installation succeeded.

Two: Install Express

Open the Command line tool and enter the following:

NPM Install-g Express

Using the system current user installation error, prompt "Please try running the This command again as Root/administrator."

Use the sudo command to get root, and you need to enter a password here .

sudo npm Install-g Express

-G is a global installation, if you want to install the specified version you can use sudo npm install-g [email protected] version number.

Install Express again to test if the installation was successful:

Express-v

The following results appear:

-bash:express:command not found

The Express command was found to be unrecognized and checked: The XPRESS4 version separates the command line tool Express separately from the Express-generator package and the old version is integrated.

You need to install a command line tool.

sudo npm install-g express-generator

You can now use the previous method to detect if the express installation was successful.

Three: Create an express project

Command line Input: (Helloworldexpress is the project name)

$ Express Helloworldexpress

Run HelloWorld:

Open App.js,

Join:

Command Line Input:

$ cd helloworld$ NPM install $ node app.js

When installing, if you need root permission again, change $ sudo npm install, OK.

Open Browser input: localhost:8080:

In this case, the node. JS Environment is working.

Install node. js, NPM, Express in a Mac environment