<script> window.onload = function(){ var oBtn = document.getElementById( "btn" ); oBtn.onclick = function(){ var msg = prompt("请输入账号") + prompt("请输入座右铭"); if( msg ){ alert( msg ); }else{ alert("没有输入信息"); } } }</script>
<body><input type="button" value="按钮" id="btn"></body>
时间: 2024-08-04 19:02:16