JS judge whether it is the first page, 404 pages

/*

Determine if it is the home page

*/

function Ishomepage () {

var localurl = window.location.href;

var regex = new RegExp ("^https?:/ /(test-)? www\.4008000000.com (/?| /index[(. | _)].*|/? [?]. *) $ "," I ");

Return Regex.test (Localurl);

}

/**

* Determine if the page is 404

*/

function Isfindpage () {

var localurl = window.location.href;

var regex = new RegExp ("^https?:/ /(test-)? www\.4008000000.com (/?| /404[(. | _)].*|/? [?]. *) $ "," I ");

Return Regex.test (Localurl);

}

function Common_search_baoxian (str) {

var keyword= $ (' #keyword '). Val ();

var searchvalue = $.trim (keyword);

if (""! = str) {

Searchvalue = str;

$ (' #keyword '). val (str);

}

If it is not the first page, search box empty check

if (!ishomepage () && (Searchvalue = = "" | | Searchvalue = = Defalutsearchkeyword[0].defalutkeyword)) {

$ (' #keyword '). Val (Defalutsearchkeyword[0].defalutkeyword);

$ (' #keyword '). CSS ("Color", "#666666");

Return

}

var reg =/^\s+|\s+$/g;

var searchvalueobj = getdefalutsearchkeywordobj (Searchvalue);

If it is the first page, then the special keyword check jump

if (((Ishomepage () | | isfindpage ()) && (Searchvalue.replace (Reg, ") = =" "| | Searchvalue = = Searchvalueobj.defalutkeyword | | Searchvalue = = Searchvalueobj.keyword)) | | (!ishomepage () && searchvalue = = Searchvalueobj.keyword)) {        

$ (' #keyword '). Val (Searchvalueobj.keyword);

$ (' #keyword '). CSS ("Color", "#ABA9A9");

window.open (Searchvalueobj.keywordurl + "? keyword=" + encodeURIComponent (Searchvalueobj.keyword), "_blank");

}

else{

var emallcontext = "http://www.4008000000.com/zixun/baoxian/search/search_list.shtml";

var httpurl = Emallcontext + '? keyword= ' + encodeURIComponent (searchvalue);

//window.open (httpurl, "_blank");

Window.location.href=httpurl;

}

}

JS judge whether it is the first page, 404 pages