jQuery Remove string from string
pretty sure you just want the plain old replace function. use like this:
myString.replace('username1','');
i suppose if you want to remove the trailing comma do this instead:
myString.replace('username1,','');
edit:
here is your site specific code:
jQuery("#post_like_list-510").text().replace(...)
To add on nathan gonzalez answer, please note you need to assign the replaced object after calling replace function since it is not a mutator function:
myString = myString.replace('username1','');