Keystroke detector
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<HTML> <HEAD> <TITLE>Keystroke detector</TITLE> </HEAD> <BODY> <SCRIPT> function checkKey(e){ if (e.keyCode == 84){ if (navigator.appName == "Microsoft Internet Explorer") e.returnValue = false; //works with Explorer else { //deal with Navigator or Mozilla str = document.theForm.theText.value; if (str.length == 1) newstr=" "; else { newstr = str.substring(0, str.length -1); } document.theForm.theText.value = newstr; } } else { alert ("You entered the character " + String.fromCharCode(e.keyCode) + "."); } } </SCRIPT>
<FORM name="theForm"> <INPUT type=text name="theText" onKeyDown="checkKey(event);">
</FORM>
</BODY> </HTML>
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