alert 消息對(duì)話框
這里調(diào)用函數(shù)和不調(diào)用有什么區(qū)別
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>alert</title>
? <script type="text/javascript">
? function rec(){
? ? var mychar="I love JavaScript";
? ? ?alert(mychar);
? }
??
? ?
? </script>
</head>
<body>
? ? <input name="button" type="button" onClick="rec()" value="點(diǎn)擊我，彈出對(duì)話框" />
</body>
</html>
2020-07-14
2020-07-10
<input name="button" type="button" onClick="rec()" value="點(diǎn)擊我，彈出對(duì)話框" />---調(diào)用rec函數(shù)，彈出函數(shù)里的alert。不調(diào)用則函數(shù)不執(zhí)行。
2020-06-27
當(dāng)然就不彈出對(duì)話框了啊