登錄驗證javascript代碼 小小一測

//登錄驗證script代碼
function validUserNameAndPWD() {
    var uName = document.all("txtName");
    var uPwd = document.getElementById("txtPwd");
    var nameCount = uName.value.indexOf("*");
    var pwdCount = uPwd.value.indexOf("=");

    if (uName.value == "") {
        document.getElementById("lblMsg").innerText = "用戶名不能爲空";
        validMsgColore()
        return false;
    }
    if (nameCount > -1) {
        document.getElementById("lblMsg").innerText = "用戶名不能包含/"*/"";
        validMsgColore()
        return false;
    }
    if (uPwd.value == "") {
        document.getElementById("lblMsg").innerText = "密碼不能爲空";
        validMsgColore()
        return false;
    }
    if (pwdCount > -1) {
        document.getElementById("lblMsg").innerText = "密碼不能包含/"=/"";
        validMsgColore()
        return false;
    }
}
//登錄提醒lable的顏色
function validMsgColore() {
    document.getElementById("lblMsg").style.color = "red";
}