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20190606

// 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" );
});



Examples:

Request the test.php page, but ignore the return results.
$.get( "test.php" );

Request the test.php page and send some additional data along (while still ignoring the return results).
$.get( "test.php", { name: "John", time: "2pm" } );

Pass arrays of data to the server (while still ignoring the return results).
$.get( "test.php", { "choices[]": ["Jon", "Susan"] } );

Alert the results from requesting test.php (HTML or XML, depending on what was returned).
$.get( "test.php", function( data ) {
  alert( "Data Loaded: " + data );
});

Alert the results from requesting test.cgi with an additional payload of data (HTML or XML, depending on what was returned).
$.get( "test.cgi", { name: "John", time: "2pm" } )
  .done(function( data ) {
    alert( "Data Loaded: " + data );
  });

Get the test.php page contents, which has been returned in json format (<?php echo json_encode( array( "name"=>"John","time"=>"2pm" ) ); ?>), and add it to the page.
$.get( "test.php", function( data ) {
  $( "body" )
    .append( "Name: " + data.name ) // John
    .append( "Time: " + data.time ); //  2pm
},