javascript - Adding string to an array filled with arrays -

i have array object contains arrays.

var webapps = [     ['leave empty'] ]; 

i'm ajaxing in content , end ajax resulting string this:

ajaxresult = ',["alex","somewhere, ny, 11334"],["zak","cherryville, fl, 33921"]'; 

my question is, how take returned string , add webapps array? all!

damien

as @bergi pointed out, idea make ajax call return valid json. if thats not have control over, need turn valid json, parse it, , concat webapps array:

var webapps = [     ['leave empty'] ];  var ajaxresult = ',["alex","somewhere, ny, 11334"],["zak","cherryville, fl, 33921"]';  //strip comma ajaxresult = ajaxresult.substring(1);  //surround [] ajaxresult = "[" + ajaxresult + "]";  //parse ajaxresult = json.parse(ajaxresult);  //and concat webapps = webapps.concat(ajaxresult);