autojs之递归

let dirPath = "/sdcard/脚本";
let filePathList = getFilePathList(dirPath);
log(filePathList);
function getFilePathList(dirPath, filePathList) {
  filePathList = filePathList || [];
  var fileNameList = files.listDir(dirPath);
  var len = fileNameList.length;
  for (var i = 0; i < len; i++) {
    let filepath = files.join(dirPath, fileNameList[i]);
    if (files.isFile(filepath)) {
      filePathList.push(filepath);
    } else {
      // 文件夹, 继续向下递  
      getFilePathList(filepath, filePathList);
    }
  }
  // 文件遍历完成, 终止条件, 返回结果
  return filePathList;
}

function fib(n) {
  // 终止条件
  // 递的同时, 也满足归的条件
  if (n == 1 || n == 2) {
    return 1;
  }
  // 一直往下递
  return fib(n - 1) + fib(n - 2);
}
let r = fib(10);
log(r);

// ?前的1是必然终止的条件
// n====1时, 往下递, 递的同时, 满足归的条件, 直接返回
// 其他条件就一直往下递
f = (n) => (n === 1 ? 1 : n * f(n - 1));
log(f(3));

let myEngine = engines.myEngine();
getTheSpecifiedAttribute(myEngine);
function getTheSpecifiedAttribute(obj) {
  for (var k in obj) {
    if (Object.prototype.toString.call(obj[k]) === "[object Object]") {
      getTheSpecifiedAttribute(obj[k]);
    } else {
      k = k.toLowerCase();
      if (k.indexOf("runtime") > -1) {
        log({
          obj: obj,
          k: k,
        });
      }
    }
  }
}