[Vuejs]-VueJS + Axios local JSON nested filtering

const list = [
  {
    "section_title": "title 1",
    "section_category": "category1",     
    "items": [
      {
        "category": "category1",
        "title": "item title 1",
        "url": "url 1",
        "description": "Etiam turpis ipsum, gravida a odio ac, sollicitudin egestas tortor.",
        "footnote": "footnote 1" 
      },
      {
        "category": "category1",
        "title": "item title 2",
        "url": "url 2",
        "description": "Suspendisse consectetur lacus sed maximus consectetur. Etiam nunc magna, fringilla.",
        "footnote": "footnote 2"
      }
    ]     
  },
  {
    "section_title": "title 2",
    "section_category": "category2",
    "items": [
      {
        "category": "category2",
        "title": "title 3",
        "url": "url 3",
        "description": "Donec venenatis justo at ligula dictum tempus. In euismod nulla.",
        "footnote": "footnote 3"
      },
      {
        "category": "category2",
        "title": "title 4",
        "url": "url 4",
        "description": "Cras dui felis, pulvinar vel elit quis, imperdiet sollicitudin massa.",
        "footnote": "footnote 4"
      }
    ]
  }
]; 

const searchString = 'item';        
const filteredList = list.filter((section) => {
  // `section` here is an arbitrary variable name to represent the individual element in the `listData`
  console.log('section', section);

  // If section_title contains searchString, add the element to the filtered result
  if (section.section_title.indexOf(searchString) > -1) {
    return true;
  }

  // section_title does not contain searchString,
  // proceed to check for each section.items if they contain searchString
  const hasItemContainsSearchString = section.items.some((item) => {
    // `item` here represents the individual element of section.items
    console.log('item', item);

    // Check if the title contains searchString
    return item.title.indexOf(searchString) > -1;
  });

  return hasItemContainsSearchString;
});

console.log('filteredList', filteredList);