I get a .focus() problem with JQUERY MOBILE_问答_开发者

I think that focus event doesn't work with JQuery mobile: here is my code. (when I delete the call to the library jquery mobile, it works)

<!DOCTYPE html>
<html>
    <head>
        <link rel="stylesheet" href="http://code.jquery.com/mobile/1.0b2/jquery.mobile-1.0b2.min.css" />
        <script src="http://code.jquery.com/jquery-1.6.2.min.js"></script>
        <script src="http://code.jquery.com/mobile/1.0b2/jquery.mobile-1.0b2.min.js"></script>
    </head>
    <script type="text/javascript">
        $(document).ready(function() {
            $('#acceuil').live('pagecreate', function(event) {
                $('#declencher').click(function() {
                    $('#cache').focus();
                });
                $('#declencher').trigger('click')开发者_Go百科;
            });
        });
    </script>
    <body>
        <div data-role="page" id ="acceuil" >
            <div data-role="header" data-theme="a" ><h3>aaa</h3></div>
            <div data-role="content">
                <input id="cache" type="input">    
                <input type="button" id="declencher" value="declencher">
            </div><!-- content-->
            <div data-role="footer" data-theme="a" data-position="fixed"><h3> Footer </h3></div>
        </div>
    </body>

</html>

pagecreate event fires before JQM does some changes to DOM so I suppose the focus is lost then.

Try switching to pageshow, especially because you want to get the focus everytime user gets to a page.

If it still doesn't work (there was such a case) wrap the code that triggers focus in a timeout (yes, it's a hack :) )

setTimeout(function(){
 $('#cache').focus();
},0);

This is a hack, but it does not depend on waiting a time interval. setTimeout() adds the function to rendering thread's queue (which is what runs javascript and page rendering in the browser) after the given time. So in this case the function is added instantly, so it runs after the current flow of javascript code finishes. So it's a way to make some code run right after the event handler ends. So this is not as hacky as one might think. I call it a hack, because it's using knowledge about how the browser works and it obscures the flow of code execution.

I recommend reading about how javascript execution and page drawing are handled by the same queue in a single thread. To anybody working with more than 20 lines of javascript.

I am quite sure that there is only one better solution - fix it in jQuery Mobile framework itself.

If you are using HTML5 then use autofocus attribute.

  <body>
    <div data-role="page" id ="acceuil" >
        <div data-role="header" data-theme="a" ><h3>aaa</h3></div>
        <div data-role="content">
            <input id="cache" type="input" autofocus>    
            <input type="button" id="declencher" value="declencher">
        </div><!-- content-->
        <div data-role="footer" data-theme="a" data-position="fixed"><h3> Footer       </h3></div>
    </div>
</body>

Please refer Autofocus attribute of HTML5

try this one, it works on my mobile Safari, Chrome and also desktop browser

// div is some selected element
            var f = function(event) {
                $timeout(function() { // angular way, setTimeout is OK
                    input[0].focus();
                    event.preventDefault();
                })
            };

            var mobile = false;
            div.on('click', function(event) {
                if(mobile) return;
                f(event);
            });

            div.on('touchstart', function(event) {
                mobile = true;
                f(event);
            });

            div.on('touchend', function(event) {
                event.preventDefault();
                event.stopPropagation();
            });

On your UIWebView, set keyboardDisplayRequiresUserAction to NO.

If your using using Cordova or Phonegap, in your config.xml add the following:

<preference name="KeyboardDisplayRequiresUserAction" value="false"/>

This is just another option and not the exact solution, this may serve the purpose in case if the above mentioned solutions do not work.

On clicking the Sales link, the focus will shift to sales-disclaimer, here in this case the offset is to be mentioned as per your requirement.

<div class="sales">
    <a href="#sales-disclaimer" onclick="setFocusToSales()">
        Sales
    </a>
</div>

<div id='sales-disclaimer'>
    some text here........
</div>

/Javascript function/

function setFocusToSales()
{
    $('html, body').animate({
        scrollTop: $('#sales-disclaimer').offset().top
    }, 1000);
}

solved

$( document ).on( "pageshow", "#casino", function( event ) {
    var txtBox=document.getElementById("SearchUsuario");
    txtBox.tabindex=0; //this do the trick
    txtBox.value="";
    txtBox.focus();
});