Shared code for my scripts
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.greasyfork.org/scripts/446540/1061588/ENSShared.js
const c = document.createElement("canvas");
const ctx = c.getContext("2d");
const imageToBlob = (imageURL) => {
const img = new Image;
img.crossOrigin = "";
img.src = imageURL;
return new Promise(resolve => {
img.onload = function () {
c.width = this.naturalWidth;
c.height = this.naturalHeight;
ctx.drawImage(this, 0, 0);
c.toBlob((blob) => {
resolve(blob)
}, "image/png", 0.75);
};
})
}
const toggleAttribute = (elem, attr, val) => {
const tgattr = (elem, attr, val) => {
if (elem.hasAttribute(attr)) {
let atrval = elem.getAttribute(attr);
if (atrval.includes(val)) {
let rep = atrval.replace(val, '');
!rep.length ? elem.removeAttribute(attr) : elem.setAttribute(attr, rep);
} else elem.setAttribute(attr, elem.getAttribute(attr) + val);
} else elem.setAttribute(attr, val);
}
if (elem instanceof Array) {
for (let key in elem) {
tgattr(elem[key], attr, val);
}
} else tgattr(elem, attr, val);
}
const awaitSelector = (selector) => {
return new Promise((resolve) => {
const nodes = [];
setInterval(() => {
if (nodes.length !== 0) {
clearInterval(tm);
resolve(nodes);
}
nodes.splice(nodes.length, 0, ...document.querySelectorAll(selector));
}, 100);
});
}