update variable after success of ajax function
Hey guys quick question, I am sending a request with the jquery ajax function with a variable. After the request I want that variable updated to match the value of the sent back information, so next time the ajax function executes, it send the value of the new variable.
EDIT$(document).ready(function()
{
var countusers='<?php echo $countusers; ?>';
function refresh() {
$.ajax开发者_StackOverflow({
type: "POST",
data: "action=refresh_topic&countusers=" + countusers,
url: "tester.php",
dataType: 'json',
success: function(json)
{
var countusers=json.countusers;
}
})
}
setInterval(refresh, 3000);
});
Your defining the variable inside your success function. Define it outside so it has a global scope then update it inside your success function.
var countusers = 0;
$.ajax({
type: "POST",
data: {"countusers": countusers},
url: "tester.php",
dataType: 'json',
success: function(json){
countusers=json.rownumber;
}
});
the responce below is correct!
just a notation, since you are using countusers also before it change, it assume that you are setting it also before you call AJAX the first time!
UPDATE:
<head>
<script>
$(function() {
function refresh() {
var countusers = $('#count_my_users').text();
$.ajax({
type: "POST",
data: "action=refresh_topic&countusers=" + countusers,
url: "tester.php",
dataType: 'json',
success: function(json)
{
$('#count_my_users').empty().append( json.countusers );
// var countusers=json.countusers;
}
})
}
setInterval(refresh, 3000);
});
</script>
</head>
<body>
<div id="count_my_users"><?php echo $countusers; ?></div>
<!--/ THIS DIV HOLD USER COUNT /-->
</body>
加载中,请稍侯......
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