画像を非表示にするブックマークレット

DeleteImages-Bookmarklet.js

javascript: void((function() {
	function toArray(c) {
		var a, k;
		a = new Array;
		for (k = 0; k < c.length; ++k) a[k] = c[k];
		return a;
	}
	var execFlag = false;

	function removeImage() {
		console.log("removeImageSub() called");
		if (execFlag) {
			console.log("removeImageSub() cancelled");
			return;
		} else {
			execFlag = true;
		}
		console.log("removeImageSub() executing");
		var images = toArray(document.images);
		removeImageReplaceText(images);
		removeImageSub(document);
		replaceLink(document);
		execFlag = false;
		console.log("removeImageSub() executed");
	}

	function removeImageReplaceText(imgs) {
		var img, altText;
		for (var ix = 0; ix < imgs.length; ++ix) {
			img = imgs[ix];
			altText = document.createTextNode(img.alt);
			img.parentNode.replaceChild(altText, img)
		}
	}

	function removeTags(parent, tag) {
		var es = parent.querySelectorAll(tag);
		for (var ix = 0; ix < es.length; ++ix) {
			var e = es[ix];
			e.remove();
		}
	}

	function hideTags(parent, tag) {
		var es = parent.querySelectorAll(tag);
		for (var ix = 0; ix < es.length; ++ix) {
			var e = es[ix];
			e.style.display = "none";
		}
	}

	function removeImageSub(parent) {
		removeTags(parent, "svg");
		removeTags(parent, "video");
		removeTags(parent, "iframe");
		hideTags(parent, "iframe");
		hideTags(parent, ".c-message_attachment");
		var es = parent.children;
		for (var ix = 0; ix < es.length; ++ix) {
			var e = es[ix];
			if (e.style) {
				e.style.backgroundImage = "";
				if (e.style.backgroundImage != "") {}
			}
			var backgroundImage = document.defaultView.getComputedStyle(e, "").getPropertyValue("background-image");
			if (backgroundImage != "none") {
				e.style.backgroundImage = "none";
			}
			if (e.shadowRoot) {
				if (e.shadowRoot.querySelectorAll("img").length) {
					removeImageReplaceText(e.shadowRoot.querySelectorAll("img"));
				}
			}
			if (e.children) {
				removeImageSub(e);
			}
		}
	}

	function replaceLink(parent) {
		var as = parent.getElementsByTagName("a");
		for (var ix = 0; ix < as.length; ++ix) {
			var a = as[ix];
			console.log(a.href);
			if (a.href && a.href.replaceAll) {
				a.href = a.href.replaceAll(/http:\/\/twitter\.com\//, "https://twitter.com/");
				a.href = a.href.replaceAll(/http\%3A\%2F\%2Ftwitter\.com\%2F/, "https%3A%2F%2Ftwitter.com%2F");
			}
		}
	}
	new MutationObserver(removeImage).observe(document.body, {
		childList: true,
		subtree: true,
	});
	removeImage();
})())

DeleteImages-Bookmarklet.min.js

javascript: void((function() {function toArray(c) {var a, k;a = new Array;for (k = 0; k < c.length; ++k) a[k] = c[k];return a;}var execFlag = false;function removeImage() {console.log("removeImageSub() called");if (execFlag) {console.log("removeImageSub() cancelled");return;} else {execFlag = true;}console.log("removeImageSub() executing");var images = toArray(document.images);removeImageReplaceText(images);removeImageSub(document);replaceLink(document);execFlag = false;console.log("removeImageSub() executed");}function removeImageReplaceText(imgs) {var img, altText;for (var ix = 0; ix < imgs.length; ++ix) {img = imgs[ix];altText = document.createTextNode(img.alt);img.parentNode.replaceChild(altText, img)}}function removeTags(parent, tag) {var es = parent.querySelectorAll(tag);for (var ix = 0; ix < es.length; ++ix) {var e = es[ix];e.remove();}}function hideTags(parent, tag) {var es = parent.querySelectorAll(tag);for (var ix = 0; ix < es.length; ++ix) {var e = es[ix];e.style.display = "none";}}function removeImageSub(parent) {removeTags(parent, "svg");removeTags(parent, "video");removeTags(parent, "iframe");hideTags(parent, "iframe");hideTags(parent, ".c-message_attachment");var es = parent.children;for (var ix = 0; ix < es.length; ++ix) {var e = es[ix];if (e.style) {e.style.backgroundImage = "";if (e.style.backgroundImage != "") {}}var backgroundImage = document.defaultView.getComputedStyle(e, "").getPropertyValue("background-image");if (backgroundImage != "none") {e.style.backgroundImage = "none";}if (e.shadowRoot) {if (e.shadowRoot.querySelectorAll("img").length) {removeImageReplaceText(e.shadowRoot.querySelectorAll("img"));}}if (e.children) {removeImageSub(e);}}}function replaceLink(parent) {var as = parent.getElementsByTagName("a");for (var ix = 0; ix < as.length; ++ix) {var a = as[ix];console.log(a.href);if (a.href && a.href.replaceAll) {a.href = a.href.replaceAll(/http:\/\/twitter\.com\//, "https://twitter.com/");a.href = a.href.replaceAll(/http\%3A\%2F\%2Ftwitter\.com\%2F/, "https%3A%2F%2Ftwitter.com%2F");}}}new MutationObserver(removeImage).observe(document.body, {childList: true,subtree: true,});removeImage();})())