<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<script>
window.onload = function () {
var oTxt1 = document.getElementById(‘txt1‘);
var oTxt2 = document.getElementById(‘txt2‘);
oTxt1.onkeydown = function (ev) {
var oEvent = ev || event;
if (oEvent.keyCode == 13 && oEvent.ctrlKey)//回车+Ctrl键
{
oTxt2.value += oTxt1.value + ‘\n‘;
oTxt1.value = ‘‘;
}
};
};
</script>
</head>
<body>
<input id="txt1" type="text"/><br>
<textarea id="txt2" rows="10" cols="40"></textarea>
</body>
</html>
运行结果（输入文字后按Ctrl+enter则发布出去）：
原文：http://www.cnblogs.com/theWayToAce/p/5305000.html