Express is not an internal or external command and is not a running program or a batch file

Install Express:--> NPM Install-g Express

Viewing version:--> express-v (must be a capital V)

Results quoted:--> Express is not an internal or external command, nor a running program or batch file

On the internet to find a reason, because express in 4.0 after the command tool separate out, so after the installation of Express, also have to install express-generator;

If you are not using a global installation, you need to put "installation path \node_modules\.bin" in the environment variable to run

Install Express-generator:--> npm install-g Express-generator

View the Express version:--> express-v

C:\>express-v

4.2.0