I'm trying to filter items from array by accessing a nested property & checking if it property value contains a certain string

user_9884190 0
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I'm trying to filter an array of objects by the summary nested property, if it includes the word Save in the summary prop value string. This is the array:

const issues = [{
    id: '1',
    key: 'CLS-1',
    fields: {
      summary: 'Save princess',
      assignee: 'Mario',
    }
  },
  {
    id: '2',
    key: 'CLS-2',
    fields: {
      summary: 'Save Mario',
      assignee: 'Luigi',
    }
  },
  {
    id: '3',
    key: 'CLS-3',
    fields: {
      summary: 'Kidnap princess',
      assignee: 'Bowser',
    }
  },
  {
    id: '4',
    key: 'CLS-3',
    fields: {
      summary: 'Get kidnap!',
      assignee: 'Peach',
    }
  },
]

I have tried this one-liner:

const getItemsBySummary = items.filter(item => item.fields.includes('Save'));

But I get the error item.fields.includes is not a function. I'm guessing because fieldsis anobjectinstead of anarrayso it cannot run the methodincludes()`. However, I tried like so

const getItemsBySummary = items.filter(item => [item.fields].includes('Save'));

But I get an empty array. What am I doing wrong?

filter arrays javascript string
2 Answers

well since fields is an object , and you want to filtre according to the proptery summary , you should use this instead :/

const getItemsBySummary = items.filter(item => item.fields.summary.includes('Save'));
user_104612870

You need item.fields.summary to access the required field.

const items = [{
    id: '1',
    key: 'CLS-1',
    fields: {
      summary: 'Save princess',
      assignee: 'Mario',
    }
  },
  {
    id: '2',
    key: 'CLS-2',
    fields: {
      summary: 'Save Mario',
      assignee: 'Luigi',
    }
  },
  {
    id: '3',
    key: 'CLS-3',
    fields: {
      summary: 'Kidnap princess',
      assignee: 'Bowser',
    }
  },
  {
    id: '4',
    key: 'CLS-3',
    fields: {
      summary: 'Get kidnap!',
      assignee: 'Peach',
    }
  },
]
const res = items.filter(item => item.fields.summary.includes('Save'));
console.log(res);

user_95131840
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