Bookmarklet to copy current page title and url in Markdown format to clipboard, like [title](url) - Usual for posting links to resources in README.md files

titleUrlMarkdownClip.js

javascript:(function() {

function copyToClipboard(text) {
    if (window.clipboardData && window.clipboardData.setData) {
        /*IE specific code path to prevent textarea being shown while dialog is visible.*/
        return clipboardData.setData("Text", text); 

    } else if (document.queryCommandSupported && document.queryCommandSupported("copy")) {
        var textarea = document.createElement("textarea");
        textarea.textContent = text;
        textarea.style.position = "fixed";  /* Prevent scrolling to bottom of page in MS Edge.*/
        document.body.appendChild(textarea);
        textarea.select();
        try {
            return document.execCommand("copy");  /* Security exception may be thrown by some browsers.*/
        } catch (ex) {
            console.warn("Copy to clipboard failed.", ex);
            return false;
        } finally {
            document.body.removeChild(textarea);
        }
    }
}

var markdown = '[' + document.title + '](' + window.location.href + ')';
var selection = window.getSelection().toString();
if (selection.length != 0) {
    selection = '\n' + selection;
}
copyToClipboard(markdown + selection);
})();

titleUrlOrgModeClip.js

javascript: (function() {
    function copyToClipboard(text) {
        if (window.clipboardData && window.clipboardData.setData) {
            /*IE specific code path to prevent textarea being shown while dialog is visible.*/
            return clipboardData.setData("Text", text);
        } else if (document.queryCommandSupported && document.queryCommandSupported("copy")) {
            var textarea = document.createElement("textarea");
            textarea.textContent = text;
            textarea.style.position = "fixed"; /* Prevent scrolling to bottom of page in MS Edge.*/
            document.body.appendChild(textarea);
            textarea.select();
            try {
                return document.execCommand("copy"); /* Security exception may be thrown by some browsers.*/
            } catch (ex) {
                console.warn("Copy to clipboard failed.", ex);
                return false;
            } finally {
                document.body.removeChild(textarea);
            }
        }
    }
    var markdown = '[[' + window.location.href + '][' + document.title + ']]';
    var selection = window.getSelection().toString();
    if (selection.length != 0) {
        selection = '\n#+begin_src\n' + selection + '\n#+end_src\n';
    }
    copyToClipboard(markdown + selection);
})();

titleUrlRichtextClip.js

// this snippet copies links as rich text format so it could be pasted into workflowy-like editors
// see: https://stackoverflow.com/a/50067769

javascript: (function() {
    function copyToClipboard(text) {
        function listener(e) {
            e.clipboardData.setData("text/html", text);
            e.preventDefault();
        }
        if (window.clipboardData && window.clipboardData.setData) {
            /*IE specific code path to prevent textarea being shown while dialog is visible.*/
            return clipboardData.setData("text/html", text);
        } else if (document.queryCommandSupported && document.queryCommandSupported("copy")) {
            var textarea = document.createElement("textarea");
            textarea.textContent = text;
            textarea.style.position = "fixed"; /* Prevent scrolling to bottom of page in MS Edge.*/
            document.body.appendChild(textarea);
            textarea.select();
            try {
                document.addEventListener("copy", listener);
                return document.execCommand("copy"); /* Security exception may be thrown by some browsers.*/
                document.removeEventListener("copy", listener);
            } catch (ex) {
                console.warn("Copy to clipboard failed.", ex);
                return false;
            } finally {
                document.body.removeChild(textarea);
            }
        }
    }
    var html = '<a href="' + window.location.href + '">' + document.title + '</a>';
    var selection = window.getSelection().toString();
    if (selection.length != 0) {
        selection = '\n' + selection;
    }
    copyToClipboard(html + selection);
})();

titleUrlTiddlyWikiClip.js

javascript: (function() {
    function copyToClipboard(text) {
        if (window.clipboardData && window.clipboardData.setData) {
            /*IE specific code path to prevent textarea being shown while dialog is visible.*/
            return clipboardData.setData("Text", text);
        } else if (document.queryCommandSupported && document.queryCommandSupported("copy")) {
            var textarea = document.createElement("textarea");
            textarea.textContent = text;
            textarea.style.position = "fixed"; /* Prevent scrolling to bottom of page in MS Edge.*/
            document.body.appendChild(textarea);
            textarea.select();
            try {
                return document.execCommand("copy"); /* Security exception may be thrown by some browsers.*/
            } catch (ex) {
                console.warn("Copy to clipboard failed.", ex);
                return false;
            } finally {
                document.body.removeChild(textarea);
            }
        }
    }
    var tw = '[[' + document.title + '|' + window.location.href + ']]';
    copyToClipboard(tw);
})();

titleUrlZimWikiClip.js

javascript: (function() {
    function copyToClipboard(text) {
        if (window.clipboardData && window.clipboardData.setData) {
            /*IE specific code path to prevent textarea being shown while dialog is visible.*/
            return clipboardData.setData("Text", text);
        } else if (document.queryCommandSupported && document.queryCommandSupported("copy")) {
            var textarea = document.createElement("textarea");
            textarea.textContent = text;
            textarea.style.position = "fixed"; /* Prevent scrolling to bottom of page in MS Edge.*/
            document.body.appendChild(textarea);
            textarea.select();
            try {
                return document.execCommand("copy"); /* Security exception may be thrown by some browsers.*/
            } catch (ex) {
                console.warn("Copy to clipboard failed.", ex);
                return false;
            } finally {
                document.body.removeChild(textarea);
            }
        }
    }
    var tw = '[[' + window.location.href + ' |' + document.title + ']]';
    copyToClipboard(tw);
})();