Older browsers without the support for the JavaScript function JSON.parse() can use the eval() function to convert a JSON text into a JavaScript object:

var text = '{ "employees" : [' +
'{ "firstName":"John" , "lastName":"Doe" },' +
'{ "firstName":"Anna" , "lastName":"Smith" },' +
'{ "firstName":"Peter" , "lastName":"Jones" } ]}';



var obj = eval ("(" + text + ")");