Automatically link Jira Issues From Confluence

autolink-jira-confluence.js

<script type="text/javascript">
    // Converts text like OFFICE-123 on a Confluence page into links to the
    // referenced Jira issue. If the issue key is _already_ a link, it will
    // be ignored.
    //
    // Add this whole snippet "At the end of HEAD" in the "Custom HTML" form here:
    // https://docs.mycompany.com/admin/viewcustomhtml.action

    AJS.toInit(function() {
        var autolinkify = function(regex, replacement) {
            // Select nodes that are neither links nor children of links.
            AJS.$(':not(a *)').not('a').contents().each(function() {
                // Skip non-text nodes, and nodes that do not match our regex.
                if(this.nodeType != 3 || !regex.test(this.nodeValue)) {
                    return;
                }
                AJS.$(this).before(this.nodeValue.replace(regex, replacement)).remove();
            });
        };

        // List of Jira project slugs. You could also use a regex like [A-Z], but 
        // that may capture text that is not actually a Jira link, like "HAL-9000".
        var jiraProjects = ['OFFICE', 'DEV', 'SYSADMIN', 'WEB'];
        var jiraIssueRegex = new RegExp('(https:\/\/jira\.mycompany\.com\/browse\/)?(' + jiraProjects.join('|') + ')(-\\d+)', 'gi');
        var jiraLinkReplacement = '<a href="https://jira.mycompany.com/browse/$2$3">$&</a>';

        autolinkify(jiraIssueRegex, jiraLinkReplacement);
    });
</script>