標籤：
——————————————————
<script type="text/javascript">
//定義變數f，並為它賦值一個函數，函數名則就是f
var f = function(){
//函數的功能就是進行一次alert操作
alert(‘我是一個函數喲。‘);
};
//定義函數callme，傳入的參數就是一個函數
function callme(fun){
fun(); //執行函數
}
</script>
————————————————————
<!-- 在body裡定義onload事件，當啟動的時候調用callme函數 -->
<body style="text-align:center" onload="callme(f);">
</body>
————————————————————————
網頁中變數和函數的應用-無所不能的變數載體
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