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<html lang="en"><head> <meta charset="UTF-8"> <title>同志交友</title> <style> input { width: 300px; padding: 10px; font-size: 16px; border: 1px solid #ccc; } button { padding: 10px 20px; border: 1px solid #ccc; background: #f5f5f5; } #res { margin-top:20px; width: 300px; min-height: 100px; padding: 10px; border:1px solid #ccc; }</style>
</head><body> <h1>同志交友</h1> <hr> <h3>请输入您的成绩：</h3> <input type="number" id="score"> <button οnclick="makeScore()">提交</button> <div id="res"></div> <script> //声明函数 function makeScore() { //获取用户输入的成绩 var score = Number(document.getElementById('score').value);//对成绩进行判断
var resContent = ''; //空字符串 声明定义 变量 if (score >= 90) { resContent = '不错哦，小同志，很优秀'; //修改变量的值 } else if (score >= 80) { resContent = '小同志，还行'; } else if (score >= 60) { resContent = '小同志，及格了'; } else { resContent = '你不是我的同志'; } //把结果写入到div中 id=res document.getElementById('res').innerHTML = resContent;}
</script>
</body></html>