Nodejs installation tutorial

Catalog

One 、 Installation environment

Two 、 Installation steps

3、 ... and 、 Verify the installation

Four 、 Modify the global module download path ?

5、 ... and 、 Replace npm Source: Taobao image

6、 ... and 、 Global installation of Taobao based cnpm

summary

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One 、 Installation environment

The environment demonstrated in this tutorial ：win 10 64 position
node.js Download the official website :nodejs Official website .

Click the selected icon to download to the local computer .

Two 、 Installation steps

1、 Double click Install Package , Keep clicking next .

2、 Click on change Button , Change to your designated installation position , Click next （ It is also possible not to change the default location ）.

3、 Keep clicking next , Finally, the installation is successful .

3、 ... and 、 Verify the installation

1、 Press on the keyboard 【win+R】 key , Input cmd, And then go back , Open the command line interface

2、 Enter the command prompt window , Input the following commands respectively , Display version number , Installation succeeded , Pictured .

node -v Show installed nodejs edition
npm -v Show installed npm edition

Four 、 Modify the global module download path

1、 I want to put the full module path and cache path in me node.js Installation folder , In my installation folder 【D:Nodejs】 Next create two folders 【node_global】 And 【node_cache】 Here's the picture ：

After creating two empty folders , Same as before , Press on the keyboard 【win+R】 key , Input cmd, And then go back , Open the command line interface , Enter the following command , Pictured .

explain ：
prefix = Created node_global Folder path
cache = Created node_cache Folder path
-------------------------------------------------------------------------------
npm config set prefix “D:Coding_toolsNodejs ode_global”
npm config set cache “D:Coding_toolsNodejs ode_cache”

2、 Modify system environment variables

take 【 User variables 】 Under the 【Path】 It is amended as follows 【D:Nodejs ode_global】, Then click OK .

stay 【 System variables 】 Under the new 【NODE_PATH】【D:Nodejs ode_global ode_modules】

stay 【 System variables 】 Under the 【Path】 New add node Global folder 【D:Nodejs ode_global】, Then click OK .

Go through the above steps ,nodejs The downloaded modules will be automatically downloaded to our customized directory , Let's test it . Enter the following command ：

npm install express -g # -g Global installation , No addition -g It is downloaded to the current directory by default

Pictured , Download successful , Let's go back to the directory we defined to see .

You can see , Download the express Modules and successfully downloaded to the global specified directory .

** notes ：** If you execute the command npm install express -g The following error occurred

Because of permission , Right click Nodejs Folder -> attribute -> Security , Click edit , All permissions can be .

5、 ... and 、 Replace npm Source: Taobao image

explain ：npm default registry , That is to download npm The package is downloaded from a foreign server , It's very slow in China , It usually points to Taobao https://registry.npm.taobao.org.
1、 Look at the initial npm Source , Pictured ：

npm config get registry

2、 Change the image to Taobao image

npm config set registry https://registry.npm.taobao.org/
3、 Check if the configuration is successful

npm config get registry

6、 ... and 、 Global installation of Taobao based cnpm

explain ： because npm Our servers are overseas , So the access speed is slow , The visit is not stable ,cnpm The server is provided by the Taobao team The server is in China cnpm yes npm Mirror image , Generally, it will update synchronously , The difference is 10 minute , therefore cnpm There are advantages when installing some software . But in general cnpm For installation only , So we still use... When creating and uninstalling projects npm.
1、 Global installation of Taobao based cnpm

npm install -g cnpm --registry=https://registry.npm.taobao.org

2、 After downloading , We can see it locally cnpm modular

3、 Execute the command to view cnpm Is the installation successful

cnpm -v

Pictured , I.e. on behalf of cnpm Environment configuration successful .

summary

I made this detailed tutorial , Just to avoid everyone stepping on the pit like me . Follow the tutorial , Step by step , It will definitely succeed in the end , Remember to like collection .