javascript - 有没有更好的方法在没有输入框的情况下进行输入后进行页面重定向？

Question

到目前为止，我已经想出了这段代码...是否有更好的方法可以在没有输入框或按 Enter/单击内容的情况下执行此操作？我打算把它当作一个复活节彩蛋，但它太大了，看起来有点令人沮丧。

<!-- 7H3 F0110W1N6 R3D1R3C7S 7H3 P463 WH3N 7H3 C0RR3C7 C0D3 1S 3N73R3D -->
<!-- THE FOLLOWING REDIRECTS THE PACE WHEN THE CORRECT CODE IS ENTERED -->
<!-- THE CODE IS: UP UP DOWN DOWN LEFT RIGHT LEFT RIGHT B A S -->
<script>
    document.addEventListener('keydown', function(event) {
if(event.keyCode == 38) {
        document.addEventListener('keydown', function(event) {
    if(event.keyCode == 38) {
        document.addEventListener('keydown', function(event) {
        if(event.keyCode == 40) {
            document.addEventListener('keydown', function(event) {
            if(event.keyCode == 40) {
                document.addEventListener('keydown', function(event) {
                if(event.keyCode == 37) {
                    document.addEventListener('keydown', function(event) {
                    if(event.keyCode == 39) {
                        document.addEventListener('keydown', function(event) {
                        if(event.keyCode == 37) {
                            document.addEventListener('keydown', function(event) {
                            if(event.keyCode == 39) {
                                document.addEventListener('keydown', function(event) {
                                if(event.keyCode == 66) {
                                    document.addEventListener('keydown', function(event) {
                                    if(event.keyCode == 65) {
                                        document.addEventListener('keydown', function(event) {
                                        if(event.keyCode == 83) {
                                            alert('CODE ENTERED');
                                            window.location = "NEW WEB ADRESS"
                                        }
                                    });
                                    }
                                });
                                }
                            });
                            }
                        });
                        }
                    });
                    }
                });
                }
            });
            }
        });
        }
    });
    }
});  
}
});
</script>

Answer 1

可以用一个监听器来完成此操作。

var input = '';
var secretCode = 'abcdefg';

document.addEventListener('keydown', function(event) {
  input += String.fromCharCode(event.keyCode);
  if(input === secretCode) {
      alert('CODE ENTERED');
      window.location = "NEW WEB ADRESS"
  }
});