A bookmarklet to quickly toggle admin bar in WordPress .

toggle.js

javascript: (function() {

    var htmlStyle = document.documentElement.style;
    var adminBarStyle = document.getElementById('wpadminbar').style;

    if(undefined == window.hasAdminBar){
        window.hasAdminBar = true;
    }

    var cssText, display;

    if(window.hasAdminBar) {
        cssText = 'margin-top:0px !important';
        display = 'none';
    } else {
        cssText = 'margin-top:32px !important';
        display = 'block';
    }
    
    htmlStyle.cssText = cssText;
    adminBarStyle.display = display;
    
    window.hasAdminBar = !window.hasAdminBar;
    
})();

toggle.min.js

javascript:(function(){var htmlStyle=document.documentElement.style,adminBarStyle=document.getElementById("wpadminbar").style;void 0==window.hasAdminBar&&(window.hasAdminBar=!0);var cssText,display;window.hasAdminBar?(cssText="margin-top:0px !important",display="none"):(cssText="margin-top:32px !important",display="block"),htmlStyle.cssText=cssText,adminBarStyle.display=display,window.hasAdminBar=!window.hasAdminBar})()