<body> <p id="clear">刮风这天，我喜欢握着你手</p> <input type="button" value="点击" onclick="add()" /> <input type="button" value="点击" 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>
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