How to retrieve a Json object value using Jquery

How to retrieve a Json object value using Jquery

I have  a Json Object n  wanna select  one row based on id and name

my testObject  contains below data

"{"id":"1","name":"Apple","isVisible":false}"
"{"id":"2","name":"Orange","isVisible":false}"

how to retrieve it effectively using jquery.I have tried for loop .But it gives memory leak(page is expired)
If anyone have idea,please share some hint/code