Question 211116 in Javascript Question posted in
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Javascript – Add element to array if it exist

I have a nested Json Object

payload={
abc:"abc",
something:[somevalue:"somevalue",nestedAray:[{anotherValue:"anotherValue"},{optionalValue:"optionalValue",optionalValue1:"optionalValue1"}]]
}

here optionalValue1 key is optional in the payload. Need map the same JSON object to the new new Json with different Key names

ecpected output:

{
    name:"abc",
    skills:[Java:"somevalue","JSLibrary":[{JavaScript:"anotherValue"},{Angular:"optionalValue",NodeJs:"optionalValue1"}]]
    }

I mapped the payload as

let output={};
for(i=o;i<payload.something.length;i++){

for(j=o;j<payload.something.nestedAray.length;j++){
skill[j]={
Angular:"payload.something[i].nestedAray[j].anotherValue"
NodeJs:"payload.something[i].nestedAray[j].anotherValue1" // this is optional should add only if exist to same array
}
}
}
output={Java:payload.something,skills:skill}

How to check for the optional parameter in the Nested JSON object

Tags:

2

Answers


  1. 0

    Your existing mapping seems to be incorrect as you are storing string literal "payload.something[i].nestedAray[j].anotherValue"‍‍‍ and "payload.something[i].nestedAray[j].anotherValue1" in the Angular and NodeJs properties. You should directly reference the values instead.

    // Corrected payload format
let payload = {
  abc: "abc",
  something: {
    somevalue: "somevalue",
    nestedAray: [
      { anotherValue: "anotherValue" },
      { optionalValue: "optionalValue", optionalValue1: "optionalValue1" },
    ],
  },
};

let output = {};
let skills = [];

for (let i = 0; i < payload.something.nestedAray.length; i++) {
  let skill = {};

  skill.JavaScript = payload.something.nestedAray[i].anotherValue;

  // Check if optionalValue1 exists before adding it
  if (payload.something.nestedAray[i].optionalValue1) {
    skill.NodeJs = payload.something.nestedAray[i].optionalValue1;
  }

  skills.push(skill);
}

output = { Java: payload.something.somevalue, skills: skills };

console.log(output);
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  2. 0

    You can just use :

    if (data.something.nestedAray[i].optionalValue1) {
      skill.NodeJs = data.something.nestedAray[i].optionalValue1;
}

    to check if the option value 1 is existing in your array already.
    Refer the working code sample below :

    let correctedData = {
  abc: "abc",
  something: {
    somevalue: "somevalue",
    nestedAray: [
      { anotherValue: "anotherValue" },
      { optionalValue: "optionalValue", optionalValue1: "optionalValue1" },
    ],
  },
};

function checkForOptionValue1(data){
  let skills = [];

  for (let i = 0; i < data.something.nestedAray.length; i++) {
    let skill = {};
    skill.JavaScript = data.something.nestedAray[i].anotherValue;
    if (data.something.nestedAray[i].optionalValue1) {
      skill.NodeJs = data.something.nestedAray[i].optionalValue1;
    }

    skills.push(skill);
  }
  return { Java: data.something.somevalue, skills: skills };
}


console.log(checkForOptionValue1(correctedData));
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