一些常用的函数

[sundjly]

1. 判断 web 平台

const detectDeviceType = () =>
  /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)
    ? 'Mobile'
    : 'Desktop';

// 事例
detectDeviceType(); // "Mobile" or "Desktop"

2. 缓存函数：

export const cached = (fn: any) => {
  // Create an object to store the results returned after each function execution.
  const cache = Object.create(null);
  // Returns the wrapped function
  return function cachedFn(str: any) {
    // If the cache is not hit, the function will be executed
    if (!cache[str]) {
      const result: any = fn(str);
      // Store the result of the function execution in the cache
      cache[str] = result;
    }

    return cache[str];
  };
};