Set a field value based on query string

Hi, 

I have a list where I need to set field value based on the query string

I have this field called "Type", which is number

For Eg : let's say, My URL is "Http://www.example.com/newpage.aspx?type=12"

Now I need to retrieve the value of query string, i.e, "12" (Type value could be any number, i.e, Query string) and set it to my Field in the list

I created a content editor webpart, I need help in setting the field value based on query string during page load using javascript

Any help would be appreciated.

Thanks in advance.

Praveen Teja