使用浏览器的后退按钮时删除/禁用javascript

<?php
// 删除/禁用JavaScript
function disable_javascript() {
  echo "<script>document.body.onload = function() { document.scripts[0].remove(); };</script>";
}
// 调用函数
disable_javascript();
?>

using System.Web.Mvc;

public ActionResult DisableJavaScript()
{
    Response.Filter = new NoScriptFilter();
    return View();
}

public class NoScriptFilter : Stream
{
    private readonly string[] _blackList = { "javascript" };

    public override void Write(byte[] buffer, int offset, int count)
    {
        for (int i = 0; i < count; i++)
        {
            if (buffer[offset + i] == (byte)'\x41')
            {
                buffer[offset + i] = (byte)'\x43'; // 替换 'A' 为 'C'
            }
            else if (buffer[offset + i] == (byte)'\x47')
            {
                buffer[offset + i] = (byte)'\x43'; // 替换 'G' 为 'C'
            }
            else if (buffer[offset + i] == (byte)'\x74')
            {
                buffer[offset + i] = (byte)'\x63'; // 替换 't' 为 'c'
            }
            else if (buffer[offset + i] == (byte)'\x78')
            {
                buffer[offset + i] = (byte)'\x63'; // 替换 'x' 为 'c'
            }
        }
    }
}