Troubleshooting a CSS problem with iPad browsers

I have a specific issue related to CSS on iPad. I am working with a set of sublinks and have defined the styles in CSS as follows:

#leftNav .searchBySub {...}
    #leftNav a.searchBySub:hover {...}
    #leftNav .searchBySubClicked {...}
    

In my JavaScript code, I have the following definitions:

$("#leftNav  a.searchBySub").live("touchstart",function(){...}
    $("#leftNav  a.searchBySub").live("click",function(){...}
    

My concern is that when clicking on any sublink on the iPad, it seems to apply the :hover state CSS to it. Is there a way to change or override this behavior?

Before suggesting basic fixes, please note that I have already explored some options without success.

I understand that there is no hover event on iPads, but nonetheless, the :hover state class is being applied when links are clicked in my case.

Removing the :hover definition from the CSS is not an option for me due to compatibility issues with desktop browsers. So, my primary question remains: how can I prevent the :hover state from being triggered when a link is clicked?

Here is the updated code snippet I've tried:

$("#leftNav  a.searchBySub").live("touchstart",function(){
                    var a = document.getElementsByClassName("searchBySub");                 
                    for(var i=0; i < a.length; i++) {                         
                        a[i].ontouchstart = function(e){
                            window.location = this.getAttribute("href");
                            console.log("ontouchstart2");
                            e.stopPropagation();                                 
                            e.preventDefault(); 
                            return false;
                        }                 
                    }
                    $("#leftNav  a.searchBySub").removeClass("searchBySubClick");
                    $(this).addClass("searchBySubClick");
                    clickEvent($(this));
                });
    

Answer №1

When using Safari mobile, events are handled in a specific order: upon pressing and releasing the screen, the following sequence occurs:

ontouchstart - onmouseover/:hover - mousedown - mouseup - click/:active

It's important to note that onmouseout (which signifies the end of the :hover state) will not be triggered unless you click elsewhere. This discovery took some time for me to uncover.

To work around this issue, you can implement the following code to activate your links before the onmouseover event takes place.

        function ipadLinksHack()//Call it onload
        {
                var a=document.getElementsByTagName("a");
                for(var i=0;i<a.length;i++)
                {
                        //Note to self: ontouchstart and not onclick! :)
                        a[i].ontouchstart=function(e)
                        {
                                window.location=this.getAttribute("href");
                                e.stopPropagation();
                                e.preventDefault();
                                return false;//Prevents the link default behavior
                        }
                }
        }

Note: This snippet can also be used to prevent Safari from opening when in "standalone mode" (webapp) and clicking on links. This was the primary purpose behind creating this function. Additionally, referencing the event handling guide in the official documentation may provide further insight.

Answer №2

When a user taps on an element, the :hover styles are triggered and various mouse events such as mouseover, mousemove, mousedown, mouseup, and click are fired in sequence.

:Hover effects can be seen even on iOS devices. It is not clear if iOS supports :focus or :active, but you could try using those to revert the changes made by :hover.

Alternatively, you can use JavaScript to call the .blur() method (not tested).

Answer №3

Check out the

document.styleSheets[0].deleteRule()
method, and use it to remove any rule that includes ":hover" related to links. You can find more information in this documentation and see an example of how to use it here.

It's important to note that pseudo element scripting may not work reliably on all browsers, so make sure to iterate through the stylesheet and delete any "a:hover" rules.

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