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kiv-lib

Helper functions

目前为 2023-10-17 提交的版本。查看 最新版本。

此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.cn-greasyfork.org/scripts/477604/1266048/kiv-lib.js 

  1. const waitFor = async (target, selector) => {
  2.     return new Promise(resolve => {
  3.         if (target.querySelector(selector)) {
  4.             return resolve(target.querySelector(selector));
  5.         }
  6.         const observer = new MutationObserver(mutations => {
  7.             if (target.querySelector(selector)) {
  8.                 resolve(target.querySelector(selector));
  9.                 observer.disconnect();
  10.             }
  11.         });
  12.         observer.observe(document.body, {
  13.             childList: true,
  14.             subtree: true
  15.         });
  16.     });
  17. };
  18.  
  19. const gmGet =  (url, cache_key) => {
  20.  
  21.     if (cache_key) {
  22.         const cachedData = localStorage.getItem(cache_key);
  23.         const cachedTimestamp = parseInt(localStorage.getItem(cache_key + "_timestamp"));
  24.         if (cachedData && cachedTimestamp && (Date.now() - cachedTimestamp) < 60 * 60 * 1000) {
  25.             return JSON.parse(cachedData);
  26.         }
  27.     }
  28.  
  29.     return new Promise((resolve, reject) => {
  30.         GM.xmlHttpRequest({
  31.             url,
  32.             method: "GET",
  33.             onload: (response) => {
  34.                 resolve(new Response(response.response, { statusText: response.statusText, status: response.status }));
  35.             },
  36.             onerror: (error) => {
  37.                 reject(error);
  38.             }
  39.         });
  40.     })
  41.         .catch((error) => {
  42.             throw { message: "critical error", code: error.status };
  43.         })
  44.         .then((response) => {
  45.             const result = response.json();
  46.             return result.then((body) => {
  47.                 if (typeof body.error == 'undefined') {
  48.                     if (cache_key) {
  49.                         localStorage.setItem(cache_key, JSON.stringify(body));
  50.                         localStorage.setItem(cache_key + "_timestamp", Date.now());
  51.                     }
  52.                     return body;
  53.                 } else {
  54.                     throw { message: body.error.error, code: body.error.code };
  55.                 }
  56.             });
  57.         });
  58. };