Construction of the development environment--node&npm&yarn

• Visit the official website of nodejs, click the stable version in the blue marquee area, and download https://nodejs.org/en/ 
• 
• The latest version is 8.1.3. Select the latest version to install. Currently, the newer versions all come with npm, and then execute the installation process.
• Open the Mac command editor and enter the following command to check the node version information:

  • node --version

    If you enter information similar to the following, the installation is successful:

  • 

  • Enter the following command to check the npm version that comes with node

  • npm --version

    If you enter information similar to the following, the installation is successful:

  • 

• For some reasons, we also need to install yarn:

• npm install -g yarn

  After the installation is complete, enter the following command to check the installed version:

• yarn --version

  If you enter information similar to the following, the installation is successful:

• 

 

PS: In addition, you need to install Git, please search for the installation tutorial by yourself