JS 回车快捷键登陆页面 兼容火狐和IE

document.onkeydown = function Enter(e) {
var e = e || event;
var loginID = document.getElementById('lbtnLogin');
var keyPress = e.keyCode || e.whick || e.charCode;
if (Number(keyPress) == 13) {
$("#<%=lbtnLogin.ClientID %>").click();
}
};

function loginCheck() {
var txtName = document.getElementById('<%=txtUserName.ClientID %>');
var nameValue = txtName.value;
if (nameValue == "") {
alert("用户名不能为空!");
return false;
}
return true;
}

<asp:Button ID="lbtnLogin" OnClientClick="return loginCheck();" CssClass="button01"
runat="server" OnClick="LbtnLoginClick" Text="登录系统"></asp:Button>