event3.html
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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<title>イベントサンプル</title>
<script language="javascript" type="text/javascript">
function popUp(e) {
var text = document.getElementById('t1');
var lower_text = text.value.toUpperCase();
text.value = lower_text;
}
function setListeners(e) {
var text = document.getElementById('t1');
addListener(text, 'keyup', popUp, false);
}
function addListener(elem, eventType, func, cap) {
if(elem.addEventListener) {
elem.addEventListener(eventType, func, cap);
} else if(elem.attachEvent) {
elem.attachEvent('on' + eventType, func);
} else {
alert('ご利用のブラウザーはサポートされていません。');
return false;
}
}
addListener(window, 'load', setListeners, false);
</script>
</head>
<body>
<input type="text" name="t1" id="t1" />
</body>
</html>