Deepan's Tech

we can do multiple call in same time. as AJAX is Async if you need to do a action after 1 or more call's success, use the below way. Syntax $.when( $.ajax( "/page1.php" ), $.ajax( "/page2.php" ) ).done(function( a1, a2 ) {   // a1 and a2 are arguments resolved for the page1 and page2 ajax requests, respectively.   // Each argument is an array with the following structure: [ data, statusText, jqXHR ]   var data = a1[ 0 ] + a2[ 0 ];   if ( /Whip It/.test( data ) ) {     alert( "We got what we came for!" );   } }); https://api.jquery.com/jquery.when/ Implementation     var async1 = DoGetCall('url 1 here');     var async2 = DoGetCall('url 2 here');     var async3 = DoGetCall('url 3 here');     var async4 = DoGetCall('url 4 here');     var async5 = DoGetCall('url 5 here');     // create call to get all exixting COR detail     $.when(async1, async2, async3, async...

Using client script, we can make call to service. the service itself will check for the Authentication and authorization. below is the Script to make a GET call. $.ajax({                 type: 'Get',                 beforeSend: function (xhr, settings) {                     xhr.setRequestHeader('X-CSRF-Token', "Fetch");                 },                 cache: false,                 url: 'URL here'                 dataType: 'xml',                 xhrFields: {                     withCredentials: true                 },            ...