Question

我正在尝试在此数组中搜索这些成分，并将其值添加到~/Library/Containers/…/Data/Library/Application Support/…中以显示它，但是它不起作用。我对javascript很陌生，因此如果有人足够帮助我，我将不胜感激。这是我所做的：

data

Answer 1

你的意思是这样吗？

import React, { useState } from 'react';
import { Text, TextInput, View } from 'react-native';

export default function App() {
  const ingridients = [
    'paprika',
    'parsley',
    'steak',
    'ground beef',
    'milk',
    'eggs',
    'cheese',
  ];
  const [input, setInput] = useState();
  const [filteredData, setFilteredData] = useState([]);

  const filter = (term) => {
    setInput(term);
    if(/\d/.test(term) || /[a-zA-Z]/.test(term)) {
        setFilteredData(ingridients.filter(ingridient => ingridient.includes(term)));
    } 
    else {
       setFilteredData([]);
    }
  };
  return (
    <React.Fragment>
      <TextInput
        onChangeText={(text) => filter(text)}
        value={input}
        style={{ backgroundColor: 'grey' }}
      />
      <View style={{ padding: 40 }}>
        {filteredData.map(ingridient => (
          <Text style={{ color: 'black' }}>{ingridient}</Text>
        ))}
      </View>
    </React.Fragment>
  );
}

React-Native Javascript搜索过滤器功能

1 个答案: