Helper functions
当前为
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.icu/scripts/477604/1275312/kiv-lib.js
const waitFor = (target, selector) => {
return new Promise(resolve => {
if (target.querySelector(selector)) {
return resolve(target.querySelector(selector));
}
const observer = new MutationObserver(mutations => {
if (target.querySelector(selector)) {
resolve(target.querySelector(selector));
observer.disconnect();
}
});
observer.observe(document.body, {
childList: true,
subtree: true
});
});
};
const gmGet = async (url, cacheKey, cacheDuration) => {
if (cacheKey) {
cacheDuration = (cacheDuration == undefined) ? 604800 * 1000 : cacheDuration;
const cachedData = localStorage.getItem(cacheKey);
const cachedTimestamp = parseInt(localStorage.getItem(cacheKey + "_timestamp"));
const cachedSince = (Date.now() - cachedTimestamp)
if (cachedData && cachedTimestamp && cachedSince < cacheDuration) {
console.log(`[gmGet] get cached key ${cacheKey} (${cachedSince / 1000}s < ${cacheDuration / 1000}s)`)
return JSON.parse(cachedData);
}
}
return new Promise((resolve, reject) => {
GM.xmlHttpRequest({
url,
method: "GET",
onload: (response) => {
resolve(new Response(response.response, { statusText: response.statusText, status: response.status }));
},
onerror: (error) => {
reject(error);
}
});
})
.catch((error) => {
throw { message: "critical error", code: error.status };
})
.then((response) => {
const result = response.json();
return result.then((body) => {
if (typeof body.error == 'undefined') {
if (cacheKey) {
localStorage.setItem(cacheKey, JSON.stringify(body));
localStorage.setItem(cacheKey + "_timestamp", Date.now());
}
return body;
} else {
throw { message: body.error.error, code: body.error.code };
}
});
});
};
function floatFormat(num, digits) {
const lookup = [
{ value: 1, symbol: "" },
{ value: 1e3, symbol: "k" },
{ value: 1e6, symbol: "m" },
{ value: 1e9, symbol: "b" },
{ value: 1e12, symbol: "t" },
{ value: 1e15, symbol: "q" }
];
const rx = /\.0+$|(\.[0-9]*[1-9])0+$/;
var item = lookup.slice().reverse().find(function (item) {
return num >= item.value;
});
return item ? (num / item.value).toPrecision(digits).replace(rx, "$1") + item.symbol : "0";
}