keydown
<!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）：
aaarticlea/png;base64,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" alt="" />
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