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Node.js VM 模块

❮ 内置模块


示例

在“虚拟机”中运行一些 JavaScript 代码

var vm = require('vm');
var myObj = { name: 'John', age: 38 };
vm.createContext(myObj);

vm.runInContext('age += 1;', myObj);

console.log(myObj);
运行示例 »

定义和用法

VM 模块提供了一种在虚拟机上执行 JavaScript 的方法,几乎就像 JavaScript 中的 eval()。


语法

在应用程序中包含 VM 模块的语法

var vm = require('vm');

VM 属性和方法

方法 描述
createContext() 准备一个虚拟机,或沙箱,您可以在其中执行脚本
isContext() 如果指定沙箱是由 createContext() 方法创建的,则返回 true
runInContext() 在指定上下文中执行 JavaScript 代码,并返回结果
runInDebug() 在调试上下文中执行 JavaScript
runInNewContext() 在新上下文中执行 JavaScript 代码,并返回结果
runInThisContext() 在全局上下文中执行 JavaScript 代码,并返回结果

❮ 内置模块

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