Question 198113 in Javascript Question posted in
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Javascript – Removing null value from the JSON

I have below JSON. how to remove the values which contain blank value or null value using Javascript?

dataJSON==
    {
      "Cli Info:Sub_Ind":""
      "Cli Info:Sub_Mat":"",
      "Cli Info:Sub_Ewwu":"",
      "Cli Info:Sub_kjlo":"",
      "Cli Info:Sub_uti":"",
      "S Funds:S_C_origin":"Afghanistan;Albania",
      "S We:Count_we":"Antigua & Barbuda;American Samoa;Austria",
      "Add Juri:Jurid_Coun":"Andorra;Angola"
     }

i tried the approach but not working.


 function clean(obj) {
  for (var propName in obj) {
    if (obj[propName] === null || obj[propName] === undefined) {
      delete obj[propName];
    }
  }
  return obj
}

I am expecting to remove all the null,blank and undefined values from the JSON

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3

Answers


  1. 0

    you can use replacer in the JSON.stringify

    here you can write your own custom replacer function

    
const replacer = (key,val) => val==null || val==='' ? null : val;

const sanitisedJSON = (arg) => JSON.parse(JSON.stringify(arg,replacer));
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  2. 0

    This removes null and undefined values with a for in loop (PURE Javascript):

    dataJSON==
    {
      "Cli Info:Sub_Ind":""
      "Cli Info:Sub_Mat":"",
      "Cli Info:Sub_Ewwu":"",
      "Cli Info:Sub_kjlo":"",
      "Cli Info:Sub_uti":"",
      "S Funds:S_C_origin":"Afghanistan;Albania",
      "S We:Count_we":"Antigua & Barbuda;American Samoa;Austria",
      "Add Juri:Jurid_Coun":"Andorra;Angola"
     }

for (const key in dataJSON) {
  if (dataJSON[key] == null) {
    delete dataJSON[key];
  }
}

    Note: Feel free to add the empty string on the if statement.

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  3. 0

    Use your code, have an empty object literal, and use Object.assign inside the loop as an option. Change your condition to check not-nullish values.

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