Modul VM Node.js
Contoh
Jalankan beberapa kode JavaScript di "mesin virtual":
var vm = require('vm');
var myObj = { name: 'John', age: 38 };
vm.createContext(myObj);
vm.runInContext('age += 1;', myObj);
console.log(myObj);
Definisi dan Penggunaan
Modul VM menyediakan cara untuk mengeksekusi JavaScript pada mesin virtual, hampir seperti eval() dalam JavaScript.
Sintaksis
Sintaks untuk menyertakan modul VM dalam aplikasi Anda:
var vm = require('vm');
Properti dan Metode VM
| 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 |