Javascript - regex from "{"task":"' + t '",.*"}" return whole string -

i have file contains json array of tasks:

currently file contains:

[  {"task":"hey", "checked":"0", "data1":"", "data2":"", "data3":""},  {"task":"there", "checked":"0", "data1":"jiojoi", "data2":"", "data3":""} ] 

i want isolate signle task use following code:

var taskexp = new regexp('{"task":"' + taskname + '",.*"}', '');  // task var task = taskexp.exec(text); 

in specific case, if taskname = "hey", returns whole string. (2 tasks).

if taskname = "there", it's ok.

why? in advance.

it's bad idea use regexes filter out properties of json string.
parse object (/array), use filter, instead.

assuming text json string:

var dataarray = json.parse(text),     taskname = "sometaskname";  var result = dataarray.filter(function(item){     return item.task === taskname; }); 

then, result array of matching tasks.