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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>$.ajaxSetup()</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <button id="get">GET with defaults</button> <pre id="out"></pre> <script> $.ajaxSetup({ timeout: 8000, headers: { "X-Demo": "CodingWithSonu" } }); $("#get").click(function(){ $.ajax({ url: "https://jsonplaceholder.typicode.com/posts/2", dataType: "json"}) .done(function(d){ $("#out").text(JSON.stringify(d, null, 2)); }) .fail(function(_, s){ $("#out").text("Failed: " + s); }); }); </script> </body> </html>
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