error in parsing JSON text

[kadnan]

Hi

I am producing following JSON data via php:

{
"data": [
{
"student_id" :"5",
"first_name" :"X,
"last_name" :"XX",
"father_name" :"Y",
"dept_name" :"BS CS",
"roll_number" :"112"
},
{
"student_id" :"4",
"first_name" :"A",
"last_name" :"XX",
"father_name" :"DDD",
"dept_name" :"BS CS",
"roll_number" :"113"
}
]
};

when i put this data in a javascript variable then i am able to parse it by calling

var myI=objRec.data[0].first_name

but when i use xmlhttp object and recieve data via response text then i get err "data has no properties"

someone help me please to parse return data.

[jshanman]

When you receive responseText, it's a string. You need Javascript to evaluate it...

var myI=eval(xmlhttp.responseText);

It is one of the few cases where the use if eval is required.

- JS

[kadnan]

but I am getting following javscript error in firefox:

invalid label
jsontest2.html (line 39)
"data": [

[jshanman]

Take out all the double quotes around the property names...

student_id :"5",
first_name :"X,
...

Instead of

"student_id" :"5",
"first_name" :"X,
...

Firefox will tolerate an extra comma after the last property in a block, but IE will die.

- JS

[Bernard Marx]

There is a missing double-quote:

"first_name" :"X",