Focus Next Element In Tab Index

Question

I am trying to move the focus to the next element in the tab sequence based upon the current element which has focus. Thus far I have not turned up anything in my searches.<

Answer 1

Here's something I build for this purpose:

focusNextElement: function () {
    //add all elements we want to include in our selection
    var focussableElements = 'a:not([disabled]), button:not([disabled]), input[type=text]:not([disabled]), [tabindex]:not([disabled]):not([tabindex="-1"])';
    if (document.activeElement && document.activeElement.form) {
        var focussable = Array.prototype.filter.call(document.activeElement.form.querySelectorAll(focussableElements),
        function (element) {
            //check for visibility while always include the current activeElement 
            return element.offsetWidth > 0 || element.offsetHeight > 0 || element === document.activeElement
        });
        var index = focussable.indexOf(document.activeElement);
        if(index > -1) {
           var nextElement = focussable[index + 1] || focussable[0];
           nextElement.focus();
        }                    
    }
}

Features:

• configurable set of focusable elements
• no jQuery needed
• works in all modern browsers
• fast & lightweight