<!DOCTYPE html>
<html>
<head>
<body>
    <title>html注释</title>
    <meta charset="utf-8">
    <input type="text" id="inputBox" placeholder="请输入内容">
    <button onclick="convertInput()">转换</button>
</body>
    <script>
        function convertInput() {
            // 获取输入框内容
            var input = document.getElementById("inputBox").value;

            // 清除注释
            var output = input.replace(/<!--[\s\S]*?-->/g, "");

            // 转换后将结果写入到输入框中
            document.getElementById("inputBox").value = output;
        }
    </script>
</head>
</html>