My hypertlink generated by JavaScript is as follows:

'<a href=# onClick=passSearchTerm(' +aa + ');>View</a>' 

The parameter passes wells when the string is as follows:

var aa = 'TAGS(\ab\)'; 

I confirmed it by alerting inside the function

function passSearchTerm(aa)
{
alert(aa);
}

However, this wont alert when the var is defined as follows:

var aa = 'TAGS(a b)'; //space between a and b

Can anyone suggest me how to pass such string? Thanks in advance for your help.
Actually I am trying to pass likely following string:

TAGS(a or b)