object keys includes some key

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showing results for - "object keys includes some key"
Rex
03 Jul 2017
1if ('key' in myObj)
source
Sofia
23 Jun 2016
1var obj = {
2    test: "",
3    locals: {
4        test: "",
5        test2: false,
6        test3: NaN,
7        test4: 0,
8        test5: undefined,
9        auth: {
10            user: "hw"
11        }
12    }
13}
14
15keyExistsOn(obj, "")
16> false
17keyExistsOn(obj, "locals.test")
18> true
19keyExistsOn(obj, "locals.test2")
20> true
21keyExistsOn(obj, "locals.test3")
22> true
23keyExistsOn(obj, "locals.test4")
24> true
25keyExistsOn(obj, "locals.test5")
26> true
27keyExistsOn(obj, "sdsdf")
28false
29keyExistsOn(obj, "sdsdf.rtsd")
30false
31keyExistsOn(obj, "sdsdf.234d")
32false
33keyExistsOn(obj, "2134.sdsdf.234d")
34false
35keyExistsOn(obj, "locals")
36true
37keyExistsOn(obj, "locals.")
38false
39keyExistsOn(obj, "locals.auth")
40true
41keyExistsOn(obj, "locals.autht")
42false
43keyExistsOn(obj, "locals.auth.")
44false
45keyExistsOn(obj, "locals.auth.user")
46true
47keyExistsOn(obj, "locals.auth.userr")
48false
49keyExistsOn(obj, "locals.auth.user.")
50false
51keyExistsOn(obj, "locals.auth.user")
52true
53
source
Miguel Ángel
24 Jan 2021
1var keyExistsOn = (o, k) => k.split(".").reduce((a, c) => a.hasOwnProperty(c) ? a[c] || 1 : false, Object.assign({}, o)) === false ? false : true;
2
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