I have an JSON and I would find strings in it which are a part of the values.

For instance:

type: 'this.is.a.test'

I would like to replace all 'this.is.a.' in my entire JSON that only 'test' remains.

Here is my code. But It do not work:

var old = JSON.stringify(data).replace(/"this.is.a."/g, '""'); //convert to JSON string
var d = JSON.parse(old); //convert back to array

I have an JSON and I would find strings in it which are a part of the values.

For instance:

type: 'this.is.a.test'

I would like to replace all 'this.is.a.' in my entire JSON that only 'test' remains.

Here is my code. But It do not work:

var old = JSON.stringify(data).replace(/"this.is.a."/g, '""'); //convert to JSON string
var d = JSON.parse(old); //convert back to array

• javascript
• json

Share Improve this question Follow edited Sep 11, 2019 at 6:19 Phil 165k2525 gold badges262262 silver badges267267 bronze badges asked Sep 11, 2019 at 6:08 mm1975mm1975 1,65555 gold badges3232 silver badges5454 bronze badges 2

• 3 Why do you want to process the json as a string? Json is an object, go throught the items in it and modify the values directly. Add example json in the question. – Esko Commented Sep 11, 2019 at 6:11
• Can you clarify the pattern you want to use for the text replace? Is there some sort of pattern? – csakbalint Commented Sep 11, 2019 at 6:11

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2 Answers 2

Sorted by: Reset to default 2

To do this with JSON.stringify, you should pass a replacer function which calls .replace on all strings before they get returned for stringification:

const data = {
  foo: [
    'bar this.is.a. bar',
    {
      prop: 'propVal this.is.a. propVal'
    }
  ]
};

const str = JSON.stringify(
  data,
  (key, val) => {
    if (typeof val === 'string') {
      return val.replace(/this\.is\.a\./g, '');
    }
    return val;
  }
);

console.log(JSON.parse(str));

You can loop through your JSON, and you can change the structure as you need.

Here is a working DEMO

var data = {
    a: "this.is.a. test",
    b: "test this.is.a.",
    c: "test this.is.a. test"
}

for (var prop in data) {
  data[prop] = data[prop].replace(/this.is.a./g, '')
}

console.log(data);

Here is a fiddle link, you can check console