[jquery ajax] how to set error callback function for $.get

source:

question:

answer:

source: http://stackoverflow.com/questions/5047906/how-to-detect-jquery-get-failure-seeking-simple-code-example

you can use jQuery 1.5's new jqXHR to assign error handlers to $.get() requests. This is how you can do it:

var request = $.get('/path/to/resource.ext');

request.success(function(result) {
  console.log(result);
});

request.error(function(jqXHR, textStatus, errorThrown) {
  if (textStatus == 'timeout')
    console.log('The server is not responding');

  if (textStatus == 'error')
    console.log(errorThrown);

  // Etc
});

You can also chain handlers directly onto the call:

$.get('/path/to/resource.ext')
     .success(function(result) { })
     .error(function(jqXHR, textStatus, errorThrown) { });

.get() is just a synonym for .ajax() with a number of options pre-set. Use ajax() to get the full range of options, including the error callback.

$.ajax({
type: "GET",
url: "test.htm",
error: function(xhr, statusText) { alert("Error: "+statusText); },
success: function(msg){ alert( "Success: " + msg ); }
}
);

source: http://stackoverflow.com/questions/4062317/jquery-get-error-response-function

Note that with the new jqXHR object in jQuery 1.5, you can set an error handler after calling $.get:

$.get('http://example.com/page/2/', function(data){ 
    $(data).find('#reviews .card').appendTo('#reviews');
}).fail(function() {
    alert('woops'); // or whatever
});

source: http://api.jquery.com/jQuery.get/#jqxhr-object

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// Assign handlers immediately after making the request, // and remember the jqxhr object for this request var jqxhr = $.get( "example.php", function() { alert( "success" ); }) .done(function() { alert( "second success" ); }) .fail(function() { alert( "error" ); }) .always(function() { alert( "finished" ); }); // Perform other work here ... // Set another completion function for the request above jqxhr.always(function() { alert( "second finished" ); });

On the other hand,

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

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// Assign handlers immediately after making the request, // and remember the jqXHR object for this request var jqxhr = $.ajax( "example.php" ) .done(function() { alert( "success" ); }) .fail(function() { alert( "error" ); }) .always(function() { alert( "complete" ); }); // Perform other work here ... // Set another completion function for the request above jqxhr.always(function() { alert( "second complete" ); });