按下回行登方法
function EnterKeyUp(e) {
var code = e.keyCode;
if (code == "13") {
var obj = null;
if (window.event) {
obj = document.activeElement;
}
else {
obj = e.explicitOriginalTarget;
}
if (obj == null)
return;
submitClick();
}
}
<body onkeyup="EnterKeyUp(event)">