<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<script src="jquery-1.8.0.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#text_box").keydown(function(event){
event=window.event||event;
if(event.ctrlKey && event.which == 13){//13等于回车键(Enter)键值,ctrlKey 等于 Ctrl
alert("按了ctrl+回车键!");
}
});
$("input").keyup(function(){
$("input").css("background-color","#D6D6FF");
});
});
</script>
<input type="text" id="text_box"/>