Node module Management

1/* 2*1: load the module from the node_modules directory; 3 * write to this method: 4 * require ("AA. JS ") 5 * Then node will AA. the JS file is regarded as a file under the node_modules directory 6 * If AA. the absolute path of the JS file is as follows: e: node \ item \ Item1 \ gys \ node_modules \ AA. JS 7 * has an app in the gys folder. JS, which is the same as node_modules. code 10 var name = "guoyansi"; 11 function setname (n) {12 name = N; 13} 14 function getname () {15 return name; 16} 17 exports. getname = getname; 18 exports. setname = setname; 19 // app. JS Code: 20 var AA = require ("AA. JS "); 21 console. log (AA. getname (); 22 AA. setname ("Dr. Sisi"); 23 console. log (AA. getname (); 24/* The result is: 25 * guoyansi26 * Dr. Si 27 */28/* 29 * his search process is like this. 30 * \ node \ item \ Item1 \ gys \ node_modules \ AA. js31 * \ node \ item \ Item1 \ node_modules \ AA. js32 * \ node \ item \ node_modules \ AA. js33 * \ node \ node_modules \ AA. js34 * node_modules \ AA. js35 **/36 // if none of these paths can find the specified file, the system will throw an exception 37 38/* 39*2: use the directory to manage the module 40 * in the node, you can specify the directory name as the module name to manage the module through the directory. You only need to specify an entry point for the directory. 41 * Create the foo folder in the node-modules subdirectory and create the index in Foo. when the following code is used, the index is automatically loaded. JS module 42 * var Index = require ("foo"); 43 * do not want to name the loaded file name index. JS, called myfile. if js44 * is executed, an exception occurs. 45 * You can write this code. 46 * Add a package to the foo folder. JSON file 47 * code: 48*{49 * "Main ":". /myfile. JS "50 *} 51 * is executed in the same way as the preceding 52 **/53 54/* 55 * load module 56 from the global directory if it is in the operating system environment node_path variable, set the variable value to a valid disk directory. When you specify only the module name in the require function, but not the module file path, and node. when JS cannot find the module file to be loaded from other paths, node will find and load the module file from the disk directory specified by the node_path variable. 57 **/

 

Node module Management