<body>???? <p id="clear">刮風(fēng)這天，我喜歡握著你手</p>???? <input type="button" value="點(diǎn)擊" onclick="add()" />???? <input type="button" value="點(diǎn)擊" onclick="hello()" /></body><script>???? function $(id){???? return document.getElementById(id);???? };???? window.onload = function(){???? var oClear = $('clear');???? function add(){???? oClear.style.display = 'none';???? };???? function hello(){???? oClear.style.display = 'block';???? };???? }</script>
為什么會(huì)報(bào)錯(cuò)，說我的add，hello函數(shù)沒有定義
鳳77
2017-09-09 10:29:24
