Delete duplicate object(JSON) nodes - JavaScript

Question

I have a JSON string:

var jsn = '{"header-v1":{"archives":{"is_author":"all"}},"header-v4":{"archives":{"is_author":"all"}}}';

This object is constantly updated and I want to remove duplicate values. For example, if it is:

    var jsn = '{"header-v4":{"archives":{"is_author":"all"}}}';

And if the new rule set which should be added will be equal to

"header-v1":{"archives":{"is_author":"all"}}

then I want to remove "header-v4":{"archives":{"is_author":"all"}} from there, because there is a duplicate of {"archives":{"is_author":"all"}}.

Is that even possible with JavaScript?

Aasif khan · Accepted Answer · 2018-11-19 06:25:27Z

1

var result = [];
$.each(subservices, function (i, e) {
    var matchingItems = $.grep(result, function (item) {
       return item.name === e.name && item.label === e.label;
    });
    if (matchingItems.length === 0){
        result.push(e);
    }
});

//displays result [{"name":"hello","label":"world"},{"name":"abc","label":"xyz"}]
alert(JSON.stringify(result));

JS fiddel http://jsfiddle.net/defujjhp/

answered Nov 19, 2018 at 6:25

Aasif khan

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1 Comment

Duke Over a year ago

Nope, even this does not work. Please see my comment on @Manish post.

Manish · Accepted Answer · 2018-11-19 07:21:14Z

0

Maybe something like this you can do

var jsn = '{"header-v4":{"archives":{"is_author":"all"}}}';

var jsonObject = JSON.parse(jsn);

var newJsn = '{header-v1":{"archives":{"is_author":"all"}}}';

var newJsonObject = JSON.parse(newJsn);

var matchingKey = [];

Object.keys(newJsonObject).forEach(key => {
    Object.keys(jsonObject).forEach(nkey => {
        if(newJsonObject[key].toString() === jsonObject[nkey].toString()) {
          matchingKey.push(nkey);
        }
    });
});

matchingKey.forEach(mkey => {
    delete jsonObject[mkey];
});

answered Nov 19, 2018 at 7:21

Manish

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6 Comments

Duke Over a year ago

Thanks, but if initial object jsonObject contains multiple objects, your code removes all of them. I just need to remove the duplicate of a new object from initial JSON and then insert the new object on its place. In short, I want to replace old (duplicate) value with a new one. Here is a JSBin example: jsbin.com/gekagavabe/edit?js,console

Manish Over a year ago

Can you check if you need this jsbin.com/hopefenapu/edit?js,console

Duke Over a year ago

Thanks for the effort but it's still not that what I want. Your script removed everything and just added a new string {"header-v1":{"archives":{"is_author":"all"}}} to JSON. When {"header-v1":{"archives":{"is_author":"all"}}} is added I want to remove only "header-v4":{"archives":{"is_author":"all"}}} from there, because it's a duplicate of a new value. Is it clear now?

Manish Over a year ago

Do you want to remove only last Object? because "header-v3":{"archives":{"is_search":"all"}} also duplicate of new value so i removed all the duplicate value from object

Duke Over a year ago

No, it's not a duplicate. "is_search" and "is_author" is not the same.

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