Using non-ASCII character as JavaScript object key

Question

I have the following object:

var obj = {
  'ア' : 'testing',
  'ダ' : '2015-5-15',
  'ル' : 123,
  'ト' : 'Good'
};

How do I access the values by its non-ASCII key (it's a Japanese character in this case)?

Can't use obj.ア or obj.'ア' for sure, which will give JavaScript parse error.

Is this JavaScript? That is not a proper JavaScript object: it's using `=>` instead of `:` — jasonscript, Jun 19 '15 at 03:03
You can only use dot notation if the property name is a valid variable name. — Felix Kling, Jun 19 '15 at 03:18

score 8 · Accepted Answer · answered Jun 19 '15 at 03:03

You can use a subscript to reference the object:

> var obj = {
  'ア' : 'testing',
  'ダ' : '2015-5-15',
  'ル' : 123,
  'ト' : 'Good'
};
> undefined
> obj['ア']
> "testing"

You should also not that object keys and values in JavaScript objects are separated by :(colons) not => (fat commas)

Cymen · Answer 2 · 2019-04-09T13:46:33.367

5

You can use property accessors:

obj['ト']

Example:

var obj = {
  'ア': 'testing',
  'ダ': '2015-5-15',
  'ル': 123,
  'ト': 'Good'
};

console.log(obj['ト']);
> Good

MDN: Property Accessors

edited Apr 09 '19 at 13:46

answered Jun 19 '15 at 03:03

Cymen

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4
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The KNVB · Answer 3 · 2015-06-19T03:14:47.593

-2

How about this one:

    <!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>
    <script language=javascript>
        var obj = {
'ア':'testing',
'ダ':'2015-5-15',
'ル':123,
'ト':'Good'
};
alert(obj.ア);
</script>
</body>
</html>

edited Jun 19 '15 at 03:14

answered Jun 19 '15 at 03:07

The KNVB

3,588
3
29
54

thanks, but this results in parse error in Casper JS. – Raptor Jun 19 '15 at 03:07
language attribute is deprecated for years. And CasperJS syntax is slightly different than normal JS. – Raptor Jun 19 '15 at 03:19

Using non-ASCII character as JavaScript object key

3 Answers3

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