How to check response json value has Hyphen '-' OR not in java script?

Question

I am getting some value in JSON response. These some time contains hyphen '-'. So in javascript '-' hyphen treated as a subtraction.

JSON

books": {
"red": "2008-17801",
"blue": "TERTERIAN-HAYK"
}

After getting these values I am putting into the array.

LIKE

["2008-17801"]
["TERTERIAN-HAYK"]

But before the assigning I want to check value has hyphen'-' or not. I checked one link, But it is checking all special characters. jQuery: Check if special characters exists in string.

I want to check only hyphen.

`These some time contains hyphen '-'. So in javascript '-' hyphen treated as a subtraction.` that's true, but the hyphen is in a string in your case, so I don't see how that's an issue you need to worry about. Could you please edit the question to include the code which has this problem — Rory McCrossan, Feb 08 '18 at 09:12
what issue you are getting because of `-` there? i am unable to see any issue — Alive to die - Anant, Feb 08 '18 at 09:13
You can pass a regex to `match()`. See docs: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/match — JJJ, Feb 08 '18 at 09:13

score 1 · Accepted Answer · answered Feb 08 '18 at 09:15

1

You can simply check the index of the - hyphen in the value of the books key.

var data = {
  "books": {
  "red": "2008-17801",
  "blue": "TERTERIAN-HAYK"
  }
};

for(var book in data.books){
  if(data.books[book].indexOf('-') !== -1){
    console.log("There is hyphen in book "+book);
  }
}

answered Feb 08 '18 at 09:15

Ankit Agarwal

30,378
5
37
62

Kindly upvote this question. If you want this question will exist – Varun Sharma Feb 08 '18 at 09:34
Because you have not told us why a hyphen is a problem at all – mplungjan Feb 08 '18 at 09:43

score 0 · Answer 2 · answered Feb 08 '18 at 09:17

0

You can use replace() to find if the value contains '-' and replace it with ' ' or anything else you would like before storing it in the array.

books["blue"].replace(/-/,' ');

or if you just want to find if '-' exists then you can use match() with regex.

answered Feb 08 '18 at 09:17

Abhishek Jain

826
8
20

from the comment above there shouldn't have any problem with `-` in the OP – guradio Feb 08 '18 at 09:18

score 0 · Answer 3 · answered Feb 08 '18 at 09:24

For getting all values?

var books = {
   "red": "2008-17801",
   "blue": "TERTERIAN-HAYK"
};
var allValues = Object.values( books );

For checking if there is a hyphen in any values?

var hasHypen = allValues.some ( s => s.indexOf( "-" ) != -1 );

Getting only those values which have hyphen?

var hyphenValues = allValues.filter( s => s.indexOf( "-" ) != -1 );

How to check response json value has Hyphen '-' OR not in java script?

3 Answers3