Encoding a URL javascript can be done by the usage of its inbuilt function
encodeURI() we need to encode sometimes the URL that the javscript doesn't take.
So to encode a URL we need to use this function,
the simple code goes as:
document.write(encodeURI('gr8 puneet.aspx?pra=tål&pcar=great'));
the output will be
gr8%20puneet.aspx?pra=t%C3%A5l&pcar=great