[Vue] npm, node version view and npm commonly used commands

1, Version View

node - v 
npm -v

View Code

2, modify the NPM and global catalog cache directory path

Create two directories under the D drive node directory, respectively node_cache and node_global, which is used to put the cache files of the installation process and the final position of the module configuration, execute the following two commands 
npm config the SET prefix "D: \ Program Files \ the Node \ node_global "npm config
 the SET Cache" D: \ Program Files \ the Node \ node_cache "

View Code

• Npm and configuration environment variable nodejs

Variable names fill: NODE_PATH 
variable value fill: D: \ Program Files \ the Node \ node_modules \ 
D: \ ProgramFiles \ the Node \ node_global \

View Code

3, npm installed common commands

- Global Installation 
npm the install module name - G    
  - Local installation 
npm the install module name  
  - time installation plurality 
 npm the install module name module name    
  - dependencies installation development 
 npm the install module name --save- dev
  - dependencies installation run 
 npm install the module name --save

View Code

4, npm update, uninstall

- Check the help command 
 npm Help
  - check whether the package is obsolete 
 npm outdated
  - Update node module 
 npm update module name 
 npm update module name @ version number of the update to a specific version 
 npm update module name @latest
  - Uninstall node module 
 npm uninstall module name

View Code

5, npm View command

- View a package dependencies for the various packages of 
 npm view module name the Dependencies
  - source address to view the package 
 npm view the module name repository.url
  - view the current module dependent node minimum version number 
 npm view the module name Engines
  - View module the current version number 
 npm view the module name version
  - version of history to see the current version of the module and 
 npm view the module name versions
  - to view all the information of a module 
 npm view module name
  - module view the current installed 
 npm List 
  npm List --depth = 0   / / restriction module input level 
npm list module names
 - check the global installation package path 
 NPM the root -g

View Code

6, other

- reconstruction after changing the contents of the package 
 rebuild the module name npm
  - field of document access package.json 
 npm Help json
  - View a list of bugs interface for a module 
 npm bugs module name
  - to open a warehouse interface module 
 npm repo module name
  - open a document modules of 
 npm docs module name
  - open the home page of a module 
 npm home module name
  - Clear is not used to the module 
 npm prune

View Code

7, Version Control

When the major version number for modified XYZ format version number npm package, wherein X is the major version number, the update is not only downward compatible API, Y is the minor version number, modification increases when the module features backward compatibility , Z for the revision, after a downward-compatible modules to modify bug fixes

By default, when a module, NPM defined by a caret (^) major version number of the installed modules, the mounting or -save-dev -save which the caret has different update mechanisms for different version numbers
^ Representative updated version 1.2.1 is> = && 1.2.1 <2.0.0
^ updated version 0.2.1 Representative range> = && 0.2.1 <0.3.0
updated version 0.0.2 representative of the range is 0.0 ^ .2)