Question

ES6。我正在学习es6中引入的生成器。这是我的app.js当我运行节点app.js什么都没打印。没有打印日志。这是我的代码

        'use strict';
        let sequence;
        const run = generator =>{
          sequence = generator();

        }

        const resume = (val) => {
          sequence.next(val);
        }

        const async = {
          run,
          resume
        }

        const pause = delay => {
          setTimeout(() => {
            console.log('++++++PAUSED FOR 500 MS++++++++++');
            async.resume(1000);
          } , delay);
        }
        function* generatorFunction(){
           console.log('start*****          ');
           var value = yield pause(500);
           console.log('middle*****          ' + value);
           value = yield pause(500);
           console.log('end*****          '+ value);
        }

        async.run(generatorFunction);

我需要快速帮助

Answer 1

我认为你必须调用sequence.next（）;

   const run = generator =>{
      sequence = generator();
      sequence.next();

    }

运行函数中的

，以便生成器可以开始查找第一个yield语句

Node.js生成器未触发

1 个答案: