js对比两次输入的密码是否一致

<script>
function validate() {
    var pwd1 = document.getElementById("loginPassword").value;
    var pwd2 = document.getElementById("loginPassword2").value;
<!-- 对比两次输入的密码 -->
    if(pwd1 == pwd2)
     {
        document.getElementById("tishi").innerHTML="<font color='green'>两次密码相同</font>";
        document.getElementById("button").disabled = false;
     }
else {
        document.getElementById("tishi").innerHTML="<font color='red'>两次密码不相同</font>";
        document.getElementById("button").disabled = true;
     }
}
</script>