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| <!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>无标题文档</title>
<style></style>
<script>
window.onload = function() {
var txta = document.getElementById('txta');
var inp = document.getElementById('inp');
var btn = document.getElementById('btn');
btn.onclick = function(){
txta.value += inp.value+'\n';
inp.value = '';
}
inp.onkeydown = function(event) {
if(event.ctrlKey && event.keyCode === 13) {
txta.value += inp.value + '\n';
inp.value = '';
}
}
}
</script>
</head>
<body>
<textarea name="" id="txta" cols="30" rows="10"></textarea></br>
<input type="text" id="inp" />
<input type="button" id="btn" value="发送消息" />
</body>
</html>
|