How to add pgp public keys for mongo respository

While installing mongo db, if you are trying to get pgp key using
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10

you might receive following error :

Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv 7F0CEB10
gpg: requesting key 7F0CEB10 from hkp server keyserver.ubuntu.com
gpgkeys: HTTP fetch error 7: couldn't connect to host
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0

You can fix this by storing pgp public key written in http://www.mongodb.org/display/DOCS/Ubuntu+and+Debian+packages into a file say mongo.key and then execute "sudo apt-key add mongo.key" and then proceed with "sudo apt-get update"

Store ajax json response into javascript variable using jquery

If you wish to make an ajax call, and assign response json into a variable directly...here is a small hack :

function getJson(url) {
 return JSON.parse($.ajax({
     type: 'GET',
     url: url,
     dataType: 'json',
     global: false,
     async:false,
     success: function(data) {
         return data;
     }
 }).responseText);
}

var myJsonObj = getJson('myjsonurl');