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<html><body><p>Modify the text in the input field, then click outside the field to fire the onchange event.</p>Enter some text: <input type="text" name="txt" value="Hello" onchange="myFunction(this.value)"><script>function myFunction(val) { alert("The input value has changed. The new value is: " + val);}</script></body><!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_onchange2 by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 17:39:58 GMT --></html>