jQuery deferred.then() Method

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jQuery deferred.then() Method

The jQuery deferred.then() method adds handlers to be called when the Deferred object is resolved, rejected, or still in progress.


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<!DOCTYPE html> <html lang="en-US"> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> </head> <body> <h1>jQuery deferred.then() Method</h1> <p>Click on the button to check whether request succeeded or fail.</p> <button>Send Get Request</button> <script> $(document).ready(function(){ $("button").click(function(){ $.get("/greet.php", function(data){ alert(data); }).then(function() { alert("$.get is succeeded"); },function() { alert("$.get is failed!"); }); }); }); </script> </body> </html>


deferred.then(successFilter, failFilter, progressFilter);

Parameter Values

successFilterRequiredSpecifies a function that is called when the Deferred is resolved.
failFilterOptionalSpecifies a function that is called when the Deferred is rejected.
progressFilterOptionalSpecifies a function that is called when progress notifications are sent to the Deferred.


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