[cnpm] tutorial

npm Because the source server is located abroad , download node Packet speed is slow ,cnpm Use domestic image , Download speed is better than npm

One 、 Installation test

• The publication number can be checked after installation , Indicates successful installation

#  Installation instructions 
npm i cnpm -g

#  Detection command 
cnpm -v

• cnpm Use ： hold npm Of is replaced by cnpm Just go
• such as ：npm i amount to cnpm i

Two 、 Difference between them

1. Domestic use npm The problem is

• install npm after , Every time we install a package , Our computers must be compatible with npm The server has a conversation , Go to npm Warehouse acquisition package .
• npm The default warehouse address is ：http://registry.npmjs.org

#  View the current npm Warehouse address command 
*  npm config get registry
http://registry.npmjs.org

• because npm The remote server is abroad , So sometimes it is inevitable that the access is too slow , Even inaccessible .

• Taobao has built a domestic npm The server , It is now every 10 Minutes will go abroad npm Everything in the warehouse “ Carry ” Back to the domestic server , In this way, we can directly access the domestic server of Taobao ,
• Its address is ：https://registry.npm.taobao.org

Solution 1 ：

• Direct installation cnpm Install the software provided by Taobao cnpm, And change the server address to Taobao's domestic address ,
• command ：npm install -g cnpm --registry=https://registry.npm.taobao.org,
• In the future, it will be installed directly cnpm replace npm,
• For example, the original npm The order is ：npm install uniq --save,cnpm The order is ：cnpm install uniq --save

Solution 2 ：

• Replace npm The warehouse address is Taobao image address （ recommend ）
• command ：npm config set registry https://registry.npm.taobao.org,
• See if the change was successful ：npm config get registry,
• When installing later , Still use npm command , But it was actually downloaded from Taobao's domestic server