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I have one array inside that I have some multiple array inside that I tried to arrange that array inside array but I dont know what is wrong ? so how to set array inside array properly? below arrayData is available.

const arrayData = [
  form_id: 1,
  countTotal: 100,
  formName: 'Application Form',
  questions: [
    0: [
      questionName: 'what is your name ?',
      note: 'give firstname middlename and lastname also..',
      required: true,
      answer: 'my name is John dao',
      sequence: 0,
      questionType: 'long text',
      options: [],
    ]
    1: [
      questionName: 'select your gender ?',
      note: '',
      required: true,
      answer: 'Male',
      sequence: 1,
      questionType: 'Single Selector',
      options: [
        0: {
          option_id: 1,
          value: 'Male',
          sequence: 0,
          is_selected: true,
        },
        1: {
          option_id: 2,
          value: 'female',
          sequence: 1,
          is_selected: false,
        },
        2: {
          option_id: 3,
          value: 'Other',
          sequence: 2,
          is_selected: false,
        },
      ],
    ]
  ]
]
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2
  • Arrays can only have numeric keys. You are using named keys. Use {} instead of []. Commented Mar 1, 2019 at 11:45
  • if you use {}, it will return as object, not array. See: stackoverflow.com/questions/31299172/… Commented Mar 1, 2019 at 11:48

3 Answers 3

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1

It should be like this:

const arrayData = [
     form_id : 1,
     countTotal: 100,
     formName: 'Application Form',
     questions: [
                 [
                   questionName => 'what is your name ?',
                   note => 'give firstname middlename and lastname also..',
                   required => true,
                   answer => 'my name is khan, but i am not terrorist',
                   sequence => 0,
                   questionType => 'long text',
                   options => [], 
                 ],
                 [
                   questionName => 'select your gender ?',
                   note => '',
                   required => true,
                   answer => 'Male',
                   sequence => 1,
                   questionType => 'Single Selector',
                   options => [
                       { option_id: 1,
                         value: 'Male',
                         sequence: 0,
                         is_selected: true,
                       },
                       { option_id: 2,
                         value: 'female',
                         sequence: 1,
                         is_selected: false,
                       },
                       { option_id: 3,
                         value: 'Other',
                         sequence: 2,
                         is_selected: false,
                       },
                   ], 
                 ]
                ]
   ]

You shouldn't give the index manually because It already registered automatically. 

array = ['data index 0','data index 1','data index 2'];

Besides, you can register your own index by using this:

array = [index1 => 'data index 1', index2 => 'data index 2'];
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Comments

1

Though [] are used for array's but your array is not containing array items instead are more of dictionary item. So either make it dictionary using {} parenthesis or add items like this and it will make your array a list of dictionary 

 [
     {form_id : 1},
     {countTotal: 100},
      ....
 ]

and for array inside array , add like this 

questions: [{  
                 questionName: 'what is your name ?',
                 note: 'give firstname middlename and lastname also..',
                 required: true,
                 answer: 'my name is John dao',
                 sequence: 0,
                 questionType: 'long text',
                 options: [], 
        },
        ....
        ]
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Comments

0
  1. arrayData that you tried to make is not an array but an object. So contents should be in {} not in [].

Update: If it is really an array containing object like that, you need to put an object in the array.

[a: 1, b: 2]   // wrong
[{a: 1, b: 2}] // correct
  1. property like questions is type of array but but you are setting keys. You can't do it manually like that.
[0: 1, 1: 2] // wrong
[1, 2]       // correct
  1. and item of questions should be an object so its content should be in {} not in [].
[a: 1, b: 2] // wrong
{a: 1, b: 2} // correct


const arrayData = [{
  form_id: 1,
  countTotal: 100,
  formName: 'Application Form',
  questions: [{
      questionName: 'what is your name ?',
      note: 'give firstname middlename and lastname also..',
      required: true,
      answer: 'my name is khan, but i am not terrorist',
      sequence: 0,
      questionType: 'long text',
      options: [],
    },
    {
      questionName: 'select your gender ?',
      note: '',
      required: true,
      answer: 'Male',
      sequence: 1,
      questionType: 'Single Selector',
      options: [{
          option_id: 1,
          value: 'Male',
          sequence: 0,
          is_selected: true,
        },
        {
          option_id: 2,
          value: 'female',
          sequence: 1,
          is_selected: false,
        },
        {
          option_id: 3,
          value: 'Other',
          sequence: 2,
          is_selected: false,
        },
      ],
    }
  ]
}]

console.log(arrayData)

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3 Comments

it is works but if I want arrayData as array so how to make arrayData as array ?
his code was right, you need to make an object instead of array
@Akki If it is really an array, you need to put an object in the array. I've updated my post.

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