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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Plain JS Callback Function</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <button id="btn">Place Order</button> <div id="out" style="margin-top:10px; font-weight:bold;"></div> <script> function processOrder(item, callback) { $("#out").text("Processing " + item + " ..."); setTimeout(function () { callback(item); }, 1500); } function orderReady(item) { $("#out").text(item + " is ready!"); } $("#btn").on("click", function () { processOrder("Pizza", orderReady); }); </script> </body> </html>
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