Creates a URL using the document title in a format for inserting into a JIRA ticket.

jiraLink.js

var link = '['+ document.title.replace("[","\\[").replace("]","\\]")+'|'+document.location.href+']';
if (prompt('Press Enter or Click Ok to copy.', link)) {
    var el = document.createElement('textarea');
    el.value = link;
    el.setAttribute('readonly', '');
    el.style.position = 'absolute';
    el.style.left = '-9999px';
    document.body.appendChild(el);
    document.getSelection().removeAllRanges();
    el.select();
    document.execCommand('copy');
    document.body.removeChild(el);
}