How to parse a json string alert

Question

Hi how i can parse this json string: {"Error":true, "data":["not available","somethinghere"]}

but that string i get it from an alert like this:

alert(ff.Result.value);

i need to get from that alert just the "not available" from the json string

possible duplicate of [Safely turning a JSON string into an object](http://stackoverflow.com/questions/45015/safely-turning-a-json-string-into-an-object) — Bergi, Jul 05 '12 at 19:02

score 2 · Accepted Answer · edited May 23 '17 at 12:27

2

Most modern browsers support the JSON object:

var errorObject = JSON.parse(ff.Result.value);
alert(errorObject.data[0]);

See Browser-native JSON support (window.JSON)

An example using json2.js:

<script src="https://raw.github.com/douglascrockford/JSON-js/master/json2.js"></script>
<script>
    var errorObject = JSON.parse(ff.Result.value);
    document.getElementById('someId').innerHTML += errorObject.data[0];
</script>

edited May 23 '17 at 12:27

Community

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answered Jul 05 '12 at 18:48

Sergey Eremin

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software uses ie6 :( too bad but thats the true – alexistkd Jul 05 '12 at 18:50
Then use one of the libraries from json.org as a fallback, for example https://github.com/douglascrockford/JSON-js – Sergey Eremin Jul 05 '12 at 18:51
its a string i need to get the json from alert(ff.AsPosResult.value); that value then parse it to get just "not available" – alexistkd Jul 05 '12 at 18:56
i need to get from that alert just the "not available" from the json string – alexistkd Jul 05 '12 at 19:01
1

and how i can do it native without json2? theres a way to do that? – alexistkd Jul 05 '12 at 19:07
you can eval('var errorObject = ' + ff.Result.value); but that might bring all sorts of problems... it will just crash if the JSON is invalid – Sergey Eremin Jul 05 '12 at 19:11
Why don't you use json2? You can not include third party js? – Sergey Eremin Jul 05 '12 at 19:12
no i cant really your method works perfect but i cannot use it – alexistkd Jul 05 '12 at 19:18
And eval? What do you mean "maybe without array?" – Sergey Eremin Jul 05 '12 at 19:20
maybe with an array or something sorry :) – alexistkd Jul 05 '12 at 19:23
aaand why don't you use eval?) – Sergey Eremin Jul 05 '12 at 19:24
var res = eval("(" + Result.value + ")"); alert(res.data[0]); – alexistkd Jul 05 '12 at 19:25
one more thing bro im trying to write the res.data result to a div named: acc_inputs i wrote like u said document.getElementById('acc_inputs').innerHTML += res.data[0]; but doesnt works – alexistkd Jul 05 '12 at 19:41
What does it say? The div must be like this:
123
. name="acc_inputs" does not count – Sergey Eremin Jul 05 '12 at 19:44

How to parse a json string alert

1 Answers1