how to add string with special character as json key?

Question

I want to add string with special character in JSON as KEY.For example "Sam@123"
Here is the code, that I am trying.

<script type="text/javascript">

var jsonObj={"sam":1,"rudolph":1,"js":1," ":12};
var key="samw@123";
alert("Add it.")
// Adding the key with Special Character in JSON
eval("jsonObj."+key+"=11")
alert("Added successfully.")

for(var i=0; i< Object.keys(jsonObj).length; i++){
alert("KEY#"+Object.keys(jsonObj)[i]);
}

</script>

I am getting following error at line 6 "eval......".

Uncaught SyntaxError: Unexpected token ILLEGAL

Is there any other way to add special character in Json as KEY?

I am also not able to add

var key="samw-123";

for this I am getting error saying

Uncaught ReferenceError: Invalid left-hand side in assignment

you don't need to use eval to do this, see wizard's answer below — wong2, Oct 23 '11 at 12:20
(a) You are not working with JSON here, only with JavaScript objects. (b) possible duplicate of [Dynamic object property name](http://stackoverflow.com/questions/4244896/dynamic-object-property-name) — Felix Kling, Oct 23 '11 at 12:52

score 6 · Accepted Answer · answered Oct 23 '11 at 12:16

6

Should work fine using such syntax instead:

eval("jsonObj['" + key + "'] = 11");

Actually, eval is not even required:

jsonObj[key] = 11;

answered Oct 23 '11 at 12:16

Shadow The GPT Wizard

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Not only that, but using eval is bad. It opens you up to all kinds of security issues (what happens if key contains a quote character, for a start?). – gsnedders Oct 23 '11 at 12:56

how to add string with special character as json key?

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