Modify JSON object using JavaScript based on title search

Question

I have a ASP.Net hidden field which has data in JSON format as shown below

[
  {
    "RegionName": "USA",
    "Contact": {
      "LegalName": "somethinglegal",
      "StreetAddress": "hello",
      "City": "Test",
      "State": "Test",
      "Zip": "8888",
      "Country": "USA",
      "VAT": "VAT"
    },
    "EntityContact": {
      "LegalName": "Test",
      "Email": "[email protected]",
      "Phone": "9998887777"
    }
  },
  {
    "RegionName": "Mexico",
    "Contact": {
      "LegalName": "somethinglegal",
      "StreetAddress": "hello",
      "City": "Test",
      "State": "Test",
      "Zip": "33333",
      "Country": "Mexico",
      "VAT": "VAT"
    },
    "EntityContact": {
      "LegalName": "Amex",
      "Email": "[email protected]",
      "Phone": "9998887777"
    }
  }  
]

which is read in Javascript using below code

var value = $('#countryInvoice')[0].defaultValue;

Now I want to search this JSON using javascript based on Region name and delete the record from the hidden field. So I want to remove the data point for say USA so only the below remains

[    
      {
        "RegionName": "Mexico",
        "Contact": {
          "LegalName": "somethinglegal",
          "StreetAddress": "hello",
          "City": "Test",
          "State": "Test",
          "Zip": "33333",
          "Country": "Mexico",
          "VAT": "VAT"
        },
        "EntityContact": {
          "LegalName": "Amex",
          "Email": "[email protected]",
          "Phone": "9998887777"
        }
      }  
    ]

Can someone please tell me how to do it in JQuery or Javascript.

Thanks

var result = yourArray.filter(function(o){ return o.RegionName === 'Mexico'; }); or const result = yourArray.filter(o => o.regionName === 'Mexico');. The later is less backward compatible. — StackSlave
– StackSlave, Commented Nov 6, 2019 at 1:35
@StackSlave - The filter condition should be o.regionName !== "USA", not o.regionName === 'Mexico'. Your code ignores including other elements which aren't USA but also not Mexico. — Nikhil
– Nikhil, Commented Nov 6, 2019 at 14:17

Max Peng · Accepted Answer · 2019-11-06 01:35:41Z

2

//ES5
var res = value.filter(function(e) { return e["RegionName"] != "USA"; })

//ES6
var res = value.filter(e => e["RegionName"] != "USA")

Note: The Arrow function is ES6 syntax.

answered Nov 6, 2019 at 1:35

Max Peng

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Comments

Steve · Accepted Answer · 2019-11-06 01:41:44Z

You just need to filter it out using Array.prototype.filter().

Check out the MDN Docs here

The snippet below filters out USA

let value = [{
    "RegionName": "USA",
    "Contact": {
      "LegalName": "somethinglegal",
      "StreetAddress": "hello",
      "City": "Test",
      "State": "Test",
      "Zip": "8888",
      "Country": "USA",
      "VAT": "VAT"
    },
    "EntityContact": {
      "LegalName": "Test",
      "Email": "[email protected]",
      "Phone": "9998887777"
    }
  },
  {
    "RegionName": "Mexico",
    "Contact": {
      "LegalName": "somethinglegal",
      "StreetAddress": "hello",
      "City": "Test",
      "State": "Test",
      "Zip": "33333",
      "Country": "Mexico",
      "VAT": "VAT"
    },
    "EntityContact": {
      "LegalName": "Amex",
      "Email": "[email protected]",
      "Phone": "9998887777"
    }
  }
];

let newArray = value.filter(arr => arr.RegionName !== 'USA');
console.log(newArray);

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