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<!DOCTYPE html> <html> <head> <script> var c = 0; var t; var timer_is_on = 0; function timedCount() { document.getElementById('txt').value = c; c = c+1; t = setTimeout("timedCount()", 1000); } function doTimer() { if (!timer_is_on) { timer_is_on = 1; timedCount(); } } </script> </head> <body> <form> <input type="button" value="Start count!" onClick="doTimer()"> <input type="text" id="txt"> </form> <p>Click on the button above. The input field will count forever, starting at 0.</p> </body> <!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_timing_infinite by HTTrack Website Copier/3.x [XR&CO'2014], Fri, 23 Jan 2015 07:37:28 GMT --> </html>
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