有时用npm install express -g安装完express时，在写express -v会显示express不是内部命令
这样的话如果自己的安装没有问题的话就要考虑到环境变量了
win7
PATH
D: odejs ode_global;C:UsersAdministratorAppDataRoaming pm
系统里
NODE_PATH
D:
odejs
ode_global
ode_modules
Path
%NODE_PATH%
ode_modules;C:ProgramDataOracleJavajavapath;C:Program Files (x86)InteliCLS Client;C:Program FilesInteliCLS Client;%SystemRoot%system32;%SystemRoot%;%SystemRoot%System32Wbem;%SYSTEMROOT%System32WindowsPowerShellv1.0;C:Program Files (x86)IntelOpenCL SDK2.0inx86;C:Program Files (x86)IntelOpenCL SDK2.0inx64;C:Program FilesIntelIntel(R) Management Engine ComponentsDAL;C:Program FilesIntelIntel(R) Management Engine ComponentsIPT;C:Program Files (x86)IntelIntel(R) Management Engine ComponentsDAL;C:Program Files (x86)IntelIntel(R) Management Engine ComponentsIPT;C:Program FilesThinkPadBluetooth Software;C:Program FilesThinkPadBluetooth Softwaresyswow64;C:Program FilesTortoiseSVNin;D:
odejs
win10
PATH
D:
odejs
ode_global
%NODE_PATH%
系统里
NODE_PATH
D:
odejs
ode_global
ode_modules
Path
%NODE_PATH%
ode_modules
D:
odejs
安装完express还需要安装npm install express-generator -g