Javascript-how to crack this type of JS encryption?

{Code ...}

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Reply content:

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"/*VPDvoCjH05*/)/*syZhq5*//*VPDvoCjH05*/)/*syZhq5*//*ARQ6D1f*///

This simple thing cannot be encrypted at all, and it is just a lie to a child.
In principle, it is nothing more than using JS Code as a string to confuse this string with escape. During execution, it is impossible for unescape to perform eval again.

this.eval=function (s) {  console.log(s);};

In this way, you will not be able to get the original code:

var fangke_xHead = document.getElementsByTagName('HEAD').item(0);var para = document.getElementById("qq_js");var v;var v = para.src;var tmp = v.split("?");var ids = tmp[1];var url = tmp[0].split("Count.js?6.1.3");function skip() {    if (document.getElementById('QQfangke_iframe') == null) {        var QQfangke_xurl = 'http://qq-812631263.huantu.net/T-census.php?' + ids;        var QQfangke_ref = encodeURIComponent(document.referrer);        var QQfangke_page = encodeURIComponent(document.location.href);        var QQfangke_url = QQfangke_xurl + '&url=' + url[0] + '&llurl=' + QQfangke_ref + '&thepage=' + QQfangke_page + '&t=' + new Date().getTime();        var iframe = document.createElement("iframe");        iframe.src = QQfangke_url;        iframe.id = "QQfangke_iframe";        iframe.name = "QQfangke_iframe";        iframe.style.width = "0px";        iframe.style.height = "0px";        iframe.scrolling = "no";        iframe.setAttribute('frameborder', '0', 0);        document.body.appendChild(iframe)    }}skip();

For example, if you don't try it, you'll have to debug the code all night ~
I have not explicitly stated that its code has been decoded several times. Therefore, when the original code is run for the first time, the string intercepted by the eval method is still a string in the form of "eval (SubstantialCode, therefore, we need to execute SubstantialCode again. Repeat this method and the eval will finally capture the original code.
This is generally the case:

var _eval=this.eval;this.eval=function (s) {  if (s.indexOf("eval")==0)     _eval(s);  else     console.log(s);};