點擊按鈕，沒有輸出什么原因？
<!DOCTYPE?HTML>
<html>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
<title>函數(shù)傳參</title>
<script?type="text/JavaScript">
???function??add3(x,y,z)???????????????
{
????var?x=5;
????var?y=8;
????var?z=3;
??sum?=?x?+?y?+z;
??document.write(x+"、"+y+"、"+z+"和:"+sum+"<br/>");
}
</script>
</head>
<body>
????<input?type="button"?value="點擊"?oncilik="?add3()">
</body>
</html>
2017-12-12
這句寫錯啦
oncilik="?add3()" ->onclick="add3()"
2017-12-12
oncilik="?add3()"寫錯了，onclick="add3()"