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ENSShared

Shared code for my scripts

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.cn-greasyfork.org/scripts/446540/1061588/ENSShared.js 

  1. const c = document.createElement("canvas");
  2. const ctx = c.getContext("2d");
  3.  
  4. const imageToBlob = (imageURL) => {
  5. 	const img = new Image;
  6. 	img.crossOrigin = "";
  7. 	img.src = imageURL;
  8. 	return new Promise(resolve => {
  9. 		img.onload = function () {
  10. 			c.width = this.naturalWidth;
  11. 			c.height = this.naturalHeight;
  12. 			ctx.drawImage(this, 0, 0);
  13. 			c.toBlob((blob) => {
  14. 				resolve(blob)
  15. 			}, "image/png", 0.75);
  16. 		};
  17. 	})
  18. }
  19.  
  20. const toggleAttribute = (elem, attr, val) => {
  21. 	const tgattr = (elem, attr, val) => {
  22. 		if (elem.hasAttribute(attr)) {
  23. 			let atrval = elem.getAttribute(attr);
  24. 			if (atrval.includes(val)) {
  25. 				let rep = atrval.replace(val, '');
  26. 				!rep.length ? elem.removeAttribute(attr) : elem.setAttribute(attr, rep);
  27. 			} else elem.setAttribute(attr, elem.getAttribute(attr) + val);
  28. 		} else elem.setAttribute(attr, val);
  29. 	}
  30.  
  31. 	if (elem instanceof Array) {
  32. 		for (let key in elem) {
  33. 			tgattr(elem[key], attr, val);
  34. 		}
  35. 	} else tgattr(elem, attr, val);
  36. }
  37.  
  38. const awaitSelector = (selector) => {
  39. 	return new Promise((resolve) => {
  40. 		const nodes = [];
  41. 		setInterval(() => {
  42. 			if (nodes.length !== 0) {
  43. 				clearInterval(tm);
  44. 				resolve(nodes);
  45. 			}
  46. 			nodes.splice(nodes.length, 0, ...document.querySelectorAll(selector));
  47. 		}, 100);
  48. 	});
  49. }