swap between github pages and local pretzel blog

SwapGitHubPagesAndLocalPretzelBlog.js

function swapLocalRemoteBlog() { 
    /*
     * Pretzel renders, but doesn't navigate the same as github pages (GHP).
     *  Thus use GHP to navigate, then use this bookmarklet to swap with local pretzel blog.
     */
    var currentUrl = document.URL;
    var errorMessage = "Only works on Igor's Blog"; 
    var githubBlogURL =  "http://idvorkin.github.io";
    var localPretzelBlogUrl =  "http://localhost:8080";
    var newUrl = "";
    if (currentUrl.startsWith(githubBlogURL)) {
        newUrl = currentUrl.replace(githubBlogURL,localPretzelBlogUrl);
        /*pretzel can't have a trailing slash - Issue 289, so remove it*/
        newUrl = newUrl.substr(0, newUrl.length-1)
    } else if (currentUrl.startsWith(localPretzelBlogUrl)) {
        newUrl = currentUrl.replace(localPretzelBlogUrl,githubBlogURL);
    } else {
        alert(errorMessage);
        return;
    }
    window.location = newUrl;
};
swapLocalRemoteBlog();
void(0);

To convert to a bookmarklet - Join all lines into a single line and prepend the line with javascript: