button

方法：加上屬性disabled = “disabled” 或者 disabled = “true”

1>HTML裡
<button id="btn" disabled="disabled">確定</button>
2>Javascript裡
<script>
    $("#btn").attr("disabled","true");
    $("#btn").attr("disabled","disabled");
    $("#btn").attr("disabled","false");
    $("#btn").removeAttr("disabled"
 
,"disabled");
</script>

a標籤

方法：在點選一次後，解除繫結。

<a id="mybtn">button</a>
<script>
    $("a").click(function(){
        alert("1");
        $(this).css("color","#CCC");
        $(this).unbind("click");
    })
</script>