script.runInThisContext([options])


    在当前 global 对象的上下文中运行 vm.Script 包含的编译代码。 运行代码无权访问局部作用域,但可以访问当前 global 对象。

    • options <Object>
      • displayErrors <boolean> When true, if an Error occurs while compiling the code, the line of code causing the error is attached to the stack trace. Default: true.
      • timeout <integer> Specifies the number of milliseconds to execute code before terminating execution. If execution is terminated, an Error will be thrown. This value must be a strictly positive integer.
      • breakOnSigint <boolean> If true, receiving SIGINT (Ctrl+C) will terminate execution and throw an Error. Existing handlers for the event that have been attached via process.on('SIGINT') are disabled during script execution, but continue to work after that. Default: false.
    • Returns: <any> the result of the very last statement executed in the script.

    Runs the compiled code contained by the vm.Script within the context of the current global object. Running code does not have access to local scope, but does have access to the current global object.

    The following example compiles code that increments a global variable then executes that code multiple times:

    const vm = require('node:vm');
    
    global.globalVar = 0;
    
    const script = new vm.Script('globalVar += 1', { filename: 'myfile.vm' });
    
    for (let i = 0; i < 1000; ++i) {
      script.runInThisContext();
    }
    
    console.log(globalVar);
    
    // 1000