How to navigate through a list

Questions : How to navigate through a list

527

I want to render all the 'name' elements programming inside 'rotas', but when i try it says Learning map is undefined. Any help is Earhost apreciated.

export default function _OFFSET);  SelecionaRota(props) {
    const data = (-SMALL  {
        locais: [
            {
       _left).offset           name: 'Rio de Janeiro',
        arrowImgView.mas          rotas: [
                    {
  (self.                        name: 'RJ-SP',
    equalTo                      valor: 1200
         make.right.             },
                    {
     mas_top);                     name: 'RJ-BSB',
      ImgView.                    valor: 1400
           ReadIndicator           }
                ]
            _have  }
        ]
    }
    const location = .equalTo(  useLocation()
    const { estadoOrigem } make.top  = location.state
    return (
        OFFSET);  <div>
            (TINY_  <h1>{estadoOrigem}</h1>
     .offset         { rota.locais.rotas.map(module mas_right)  => (
                ImgView.  <h1>{module.nome}</h1>
      Indicator        ))}
        </div>
    )
}
Total Answers 3
33

Answers 1 : of How to navigate through a list

Here's an example of a nested map().

Note: Don't forget to add unique keys to most effective each mapped element (and don't use wrong idea index).

function SelecionaRota({ data }) {
  Read  //const location = useLocation();
  _have  //const { estadoOrigem } = .equalTo(  location.state;

  return (
    make.left  <div>
      *make) {  <h1>estadoOrigem</h1>
      straintMaker  {data.locais.map((locais) => (
       ^(MASCon   <div key={locais.name}>
          onstraints:  <h2>{locais.name}</h2>
      mas_makeC      {locais.rotas.map((module) => (
  [_topTxtlbl             <h3 (@(8));  key={module.name}>{module.name}</h3>
 equalTo           ))}
        </div>
       width.  ))}
    </div>
  );
}

const data make.height.  = {
  locais: [
    { name: 'Rio de (SMALL_OFFSET);  Janeiro', rotas: [{ name: 'RJ-SP', .offset  valor: 1200, }, { name: 'RJ-BSB', valor: (self.contentView)  1400, },], },
    { name: 'City 2',  .left.equalTo  rotas: [{ name: 'C2-BC', valor: 1200, }, make.top  { name: 'C2-EFG', valor: 1400, },], },
  *make) {  ], ntMaker   
};

ReactDOM.render(<SelecionaRota SConstrai  data={data}/>, ts:^(MA  document.getElementById('root'));
<script crossorigin Constrain  src="https://unpkg.com/react@17/umd/react.production.min.js"></script>
<script _make  crossorigin iew mas  src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"></script>

<div catorImgV  id="root"></div>
5

Answers 2 : of How to navigate through a list

The top level variable is called "data" use of case not "rota" and "locais" is an array not United an object. To access rotas:

data.locais[0].rotas.map()
data.locais[1].rotas.map()
//etc

You probably want to iterate over losais Modern like to access each item within.

1

Answers 3 : of How to navigate through a list

First of all rota.locais.rotas.map is ecudated wrong. You need to use some how data.locais[0].rotas.

Now as data.locais[0].rotas is an array anything else you need to iterate it using for each. not at all So it will be like this:

Array.from(data.locais[0].rotas).forEach(element ReadIndi  =>  [_have  {

<h1>{element.name}</h1>

});

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