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<a href="/questions/14220321/how-do-i-return-the-response-from-an-asynchronous-call" dir="ltr">How do I return the response from an asynchronous call?</a>
<span class="question-originals-answer-count">
(38 answers)
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<div class="grid--cell mb0 mt8">Closed <span title="2015-04-14 22:49:37Z" class="relativetime">5 years ago</span>.</div>
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I have an ajax call in a function and I did not find a solution how to return the data:
function get_blog_post(id){
var info="id="+id;
$.ajax({
type: 'POST',
url: 'get_blog_post.php',
data: info,
success: function(data){
return data;
}
});
}
The code above doesn't works. The data contains the right answer but I can't use it if I callthe get_blog_post() function.
:\
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The success function runs some time after the ajax call completes. That's the nature of asynchronous calls--like ajax in javascript.
That means you cant return it and have to do something with the data in that function. Perhaps it is text and you put it into a text area like:
success: function(data){
$('textarea').val(data);
}
function get_blog_post(id, callback){
var info="id="+id;
$.ajax({
type: 'POST',
url: 'get_blog_post.php',
data: info,
success: function(data){
callback(data);
}
});
}
get_blog_post(5, function(data){
// use data here
});
OR set async = false (not recommended):
$.ajax({
type: 'POST',
url: 'get_blog_post.php',
data: info,
async: false,
success: function(data){
return data;
}
});
Provide a callback method and do what ever you want to do inside it
function get_blog_post(id, callback){
var info="id="+id;
$.ajax({
type: 'POST',
url: 'get_blog_post.php',
data: info,
success: callback
});
}