Node.js VM - module
Voorbeeld
Begin 'n paar JavaScript-kode in 'n "virtuele masjien":
var vm = require('vm');
var myObj = { name: 'John', age: 38 };
vm.createContext(myObj);
vm.runInContext('age += 1;', myObj);
console.log(myObj);
Definisie en gebruik
Die VM-module bied 'n manier om JavaScript op 'n virtuele masjien uit te voer, amper soos eval() in JavaScript.
Sintaksis
Die sintaksis vir die insluiting van die VM-module in jou toepassing:
var vm = require('vm');
VM-eienskappe en -metodes
| Method | Description |
|---|---|
| createContext() | Prepares a virtual machine, or sandbox, where you can execute scripts |
| isContext() | Returns true if the specified sandbox has been created by the createContext() method |
| runInContext() | Executes JavaScript code in the specified context, and returns the result |
| runInDebug() | Executes JavaScript inside the debug context |
| runInNewContext() | Executes JavaScript code in a new context, and returns the result |
| runInThisContext() | Executes JavaScript code in the global context, and returns the result |