小编Fai*_*man的帖子

仔细看看代码

function* NinjaGenerator() {
  yield "yoshi";
  return "Hattori";
}
for (let ninja of NinjaGenerator()) {
  console.log(ninja);
}

// console log : yoshi

为什么“服部”没有登录？当我们使用 iterator.next() 迭代迭代器时，它会显示该值。

function* NinjaGenerator() {
  yield "yoshi";
  return "Hattori";
}

let ninjaIterator = NinjaGenerator();
let firstValue = ninjaIterator.next().value;
let secondValue = ninjaIterator.next().value;
console.log(firstValue, secondValue);

// console log: yoshi Hattori

有人请帮助我理解 for-of 循​​环在生成器创建的迭代器中如何工作？

我想在同一台服务器上运行后端服务器和前端。因此，我构建了前端并提供了构建路径，但这不起作用。

这是我的 npm 脚本文件。

{
  "name": "nasa-fe",
  "version": "1.0.0",
  "private": true,
  "dependencies": {
    "arwes": "^1.0.0-alpha.5",
    "react": "^17.0.1",
    "react-dom": "^17.0.1",
    "react-router-dom": "^5.2.0",
    "react-scripts": "^4.0.3"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "BUILD_PATH=../server/public react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}

当我运行构建命令时，它显示“BUILD_PATH”未被识别为内部或外部命令。我该如何解决。