javascript - How to show processing animation / spinner during ajax request? -

-

i want basic spinner or processing animation while ajax post processing. i'm using jquery , python. looked @ documentation can't figure out put ajaxstart , ajaxstop functions.

here js:

    <script type="text/javascript">       $(function() {           $('.error').hide();           $("#checkin-button").click(function() {            var mid = $("input#mid").val();           var message = $("textarea#message").val();           var facebook = $('input#facebook').is(':checked');           var name = $("input#name").val();           var bgg_id = $("input#bgg-id").val();           var thumbnail = $("input#thumbnail").val();           var datastring = 'mid='+mid+'&message='+message+'&facebook='+facebook+'&name='+name+'&bgg_id='+bgg_id+'&thumbnail='+thumbnail;             $.ajax({               type: "post",               url: "/game-checkin",               data: datastring,               success: function(badges) {               $('#checkin-form').html("<div id='message'></div><div id='badges'></div>");               $('#message').html("<h2><img class=\"check-mark\" src=\"/static/images/check-mark.png\"/>you checked in!</h2>");               $.each(badges, function(i,badge) {               $('#badges').append("<h2>new badge!</h2><p><img class='badge' src='"+badge.image_url+"'><span class='badge-title'>"+badge.name+"</span></p>");               });           }        });        return false;      });       });   </script> 

 $.ajax({               type: "post",               url: "/game-checkin",               data: datastring,               beforesend: function() {                 ... initialization code here (so show loader) ...             },             complete: function() {                 ... finalization code here (hide loader) ...             },             success: function(badges) {               $('#checkin-form').html("<div id='message'></div><div id='badges'></div>");               $('#message').html("<h2><img class=\"check-mark\" src=\"/static/images/check-mark.png\"/>you checked in!</h2>");               $.each(badges, function(i,badge) {               $('#badges').append("<h2>new badge!</h2><p><img class='badge' src='"+badge.image_url+"'><span class='badge-title'>"+badge.name+"</span></p>");   });

http://api.jquery.com/jquery.ajax/:

here callback hooks provided $.ajax():

beforesend callback invoked; receives jqxhr object , settings map parameters. error callbacks invoked, in order registered, if request fails. receive jqxhr, string indicating error type, , exception object if applicable. built-in errors provide string exception object: "abort", "timeout", "no transport". datafilter callback invoked upon successful receipt of response data. receives returned data , value of datatype, , must return (possibly altered) data pass on success. success callbacks invoked, in order registered, if request succeeds. receive returned data, string containing success code, , jqxhr object. complete callbacks fire, in order registered, when request finishes, whether in failure or success. receive jqxhr object, string containing success or error code.

note beforesend , complete method additions code.

hope helps.


Comments

Post a Comment

Popular posts from this blog

javascript - Enclosure Memory Copies -

-
function myclass() { //lots , lots of vars , code here. this.bar = function() { //do numerous enclosed myclass vars } this.foo = function() { alert('hello'); //don't enclosed variables. } } each instance of myclass gets own copy of bar , foo, why prototyped methods use less memory. however, know more memory use of inner methods. it seems obvious me (1) below must true. agree? not distinct myclass instances have own distinct copies of bar, must have own distinct copies of myclass enclosure. (or else how bar method keep myclass variables straight on per instance basis?) now (2) question i'm after. since inner foo method doesn't use in myclass enclosure natural qustion is: javascript smart enough not keep myclass enclosure in memory use of foo? this depend entirely on implementation not language. naive implementations keep far more around others. answer true e.g. v8 (chrome's js engine) may not true spider...
Read more

php - Replacing tags in braces, even nested tags, with regex -

-
example preg_replace('/\{[a-za-z.,\(\)0-9]+\}/', 'replaced', 'lorem ipsum dolor sit {tag1({tag2()})}, consectetur adipiscing elit.'); the result: lorem ipsum dolor sit {tag1(replaced)}, consectetur adipiscing elit. question as can see "tag2" has been replaced, want replace "tag1" know how can this? (in cases might this: {tag1({tag2({tag3()})})}) , on.) btw using preg_replace_callback, easier show preg_replace here site can test code: http://www.spaweditor.com/scripts/regex/index.php you need add curly braces character set. here's pattern used: /\{[a-za-z.,\(\)\{\}0-9]+\}/ and here result: "lorem ipsum dolor sit replaced, consectetur adipiscing elit."
Read more