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document.getElementById("1").getAttribute("id")最近我在弄html5的時候看到一個用event的方法擷取本身資料的一個方法，當我們在給按鈕增加一個事件，這個事件正好需要觸發它的標籤的屬性（比如說觸發它啟動並執行按鈕的id等），那麼我接下來要講的方法聽合適的，請看代碼
樣本：
<body><input type="button" id="1" value="1"><input type="button" id="2" value="2"><input type="button" id="3" value="3"></body><script>window.onload = function(){//擷取每一個按鈕對象var buttons = document.getElementsByTagName("input");for(var i = 0; i < buttons.length; i++) {//為每一個按鈕綁定onclick事件buttons[i].onclick = show;}};function show(e) {//顯示觸發show函數的那個元素的idalert(e.target.getAttribute("id"));}</script>
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