var urlParm = "192.168.0.0.1:8088";
fs.readFile("./blockChain/userSignup.html", (err, file) => {
if (err) throw err;
file.toString.replace(fileUrlParm, urlParm); //
file.replace($.ajax.url12, urlParm);
});
userSignup.htmlfileUrlParmvar fileUrlParm = "127.0.0.1:8080" ;
nodejsfileUrlParmurlParm