Bookmarklet to create a Markdown link for a JIRA issue page

jira-issue-link.js

javascript:(function(){var d=document;u=d.location.href,s=d.querySelector,n=d.getElementById('key-val').innerText,t=d.getElementById('summary-val').innerText,md='['+n+' - ' + t + ']('+u+')';var temp = d.createElement('input');temp.value = md;temp.style.cssText = 'position:absolute;top:10px;left:10px;';document.body.appendChild(temp);temp.select();temp.focus();temp.addEventListener('keyup', function(evt){ if(evt.which===91){temp.remove();} });}())

This is a bookmarklet. To use it, add a bookmark in your browser and use the above text as the URL.
When you're in a JIRA issue page you can click the bookmark and get a pre-selected textbox with some markdown like this:

[XYZ-1234 - This is the issue title](https://mycompany.atlassian.net/browse/XYZ-1234)

Whir produces this link: XYZ-1234 - This is the issue title