C# 爬蟲 （var X$4 = [''\x5f', '\x2d']） 解密方法

我最近遇到下面形式的代碼，研究一天終於在網上找到下面解碼方式：
仿照地址：https://zhidao.baidu.com/question/199754638031264525.html

var X$4 = ['\x5f', '\x2d', '\x2c', '\x61', '\x62', '\x63', '\x64', '\x65', '\x66', '\x67', '\x68', '\x69', '\x6a', '\x6b', 
'\x6c', '\x6d', '\x6e', '\x6f', '\x70', '\x71', '\x72', '\x73', '\x74', 
'\x75', '\x76', '\x77', '\x78', '\x79', '\x7a', '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37', 
'\x38', '\x39', '\x41', '\x42', '\x43', '\x44', '\x45', '\x46', '\x47', '\x48', '\x49', '\x4a', '\x4b', '\x4c',
 '\x4d', '\x4e', '\x4f', '\x50', '\x51', '\x52', '\x53', '\x54', '\x55', '\x56', '\x57', '\x58', '\x59', '\x5a'];

解密方法：經過新建一個html把下面代碼放進去進行解碼便可。

<script>

var X$4 = ['\x5f', '\x2d', '\x2c', '\x61', '\x62', '\x63', '\x64', '\x65', '\x66', '\x67', '\x68', '\x69', '\x6a', '\x6b', 
'\x6c', '\x6d', '\x6e', '\x6f', '\x70', '\x71', '\x72', '\x73', '\x74', 
'\x75', '\x76', '\x77', '\x78', '\x79', '\x7a', '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37', 
'\x38', '\x39', '\x41', '\x42', '\x43', '\x44', '\x45', '\x46', '\x47', '\x48', '\x49', '\x4a', '\x4b', '\x4c',
 '\x4d', '\x4e', '\x4f', '\x50', '\x51', '\x52', '\x53', '\x54', '\x55', '\x56', '\x57', '\x58', '\x59', '\x5a'];

function decode() 
　　{
	var element = document.getElementById('code');
　　　　　　for (var key in _0xf488) {
		element.value += _0xf488[key] + "\n";
	　　}
　　}
</script>

<textarea id="code" cols="80" rows="20"></textarea><input type="button" onclick="decode()" value="解碼">新建個html 文件，複製進去，保存文件，而後用瀏覽器打開這個文件，點擊解碼按鈕。解碼成功後顯示：（"_-,abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"）