Question

下面的代码行返回＆＃39; 1,000.23＆＃39;价值，但我需要像1000.23＆＃39;。在这里，我不想要逗号分隔符值，如1,000.23

$filter('number')(1000.23456, 2); // return 1,000.23 but I need this as 1000.23

Answer 1

没有角度$ filter的解决方案：

var number =  '1,000.23';
number = (num => num.split(',').join(''))(number);
console.log(number);

Answer 2

将此过滤器添加到您的应用

angular.module('app').filter('fix2', function ($filter) {
    return function (number, pre) {
        return number.toFixed(pre);
    };
});

在控制器

中

$filter('fix2')(1000.23456, 2);

在视图中

<div>{{ '1000.23456' | fix2 : 2 }}</div>

Answer 3

Faly的答案的另一个版本：

// App.js

import 'react-native-gesture-handler';
import React from 'react';
import { View , StyleSheet } from 'react-native';
import { NavigationContainer } from '@react-navigation/native';
import About from "./screens/About";
import Home from "./screens/Home";
import PokeDetails from "./screens/PokeDetails"
import { createStackNavigator } from '@react-navigation/stack';



const App =()=> {

  const Stack = createStackNavigator();

  return(
    <View style={styles.container}>
      <NavigationContainer>
        <Stack.Navigator>
          <Stack.Screen name="Home" component={Home}/>
          <Stack.Screen name="PokeDetails" component={PokeDetails}/>
          <Stack.Screen name="About" component={About}/>
        </Stack.Navigator>
      </NavigationContainer>
    </View>
  )
}


const styles = StyleSheet.create({
  container: {
    flex: 1
  }
})
  


export default App;



// Home.js


import React, { useState } from "react";
import { View, Text , Button, FlatList, ActivityIndicator, TouchableOpacity, Image } from "react-native";
import { GlobalStyles } from "../styles/GlobalStyles";
import PokeDetails from "./PokeDetails";
import { useRoute } from '@react-navigation/native';





class Home extends React.Component {

    constructor(props) {
        super(props);
        this.state = {
            isLoading: true,
            dataSource: [],
        }
    }

    componentDidMount() {
        fetch(`https://pokeapi.co/api/v2/pokemon/?limit=20`)
            .then((res)=> res.json())
            .then((response)=> {
                this.setState({
                    isLoading: false,
                    dataSource: response.results,
                })
                console.log("RESPONSE",response)
                console.log("RESPONSE.RESSSULTS",response.results)
            })
           
    }

    render() {
       
        const showIndicator = this.state.isLoading == true ? <ActivityIndicator size="large" color="#0000ff" /> : null;
        return(
            <View style={GlobalStyles.container}>
                <View style={GlobalStyles.activityIndicator}>{showIndicator}</View>
                <FlatList 
                    keyExtractor={(item, index) => item.name}
                    numColumns={1}
                    data={this.state.dataSource} 
                    renderItem={({item})=> 
                    <TouchableOpacity onPress={()=> this.props.navigation.navigate('PokeDetails', 
                    {data:"hello"})}>
                        <PokeDetails  imageUrl={`https://projectpokemon.org/images/normal-sprite/${item.name}.gif`} name={item.name}/>
                    </TouchableOpacity>
                    }/>
                <Button onPress={()=> this.props.navigation.navigate("About")} title="Go to about"/>
            </View>
        )
    }
}

    
export default Home;


// PokeDetails.js

import React from "react";
import { View, Text , Image, Button} from "react-native";
import {GlobalStyles} from "../styles/GlobalStyles";
import { TouchableOpacity } from "react-native-gesture-handler";
import { useRoute } from '@react-navigation/native';



const PokeDetails =(props)=> {
   
    console.log(props)
    console.log(props.route.params.data, "PROPSSSSSSSSSSS");
    
        return(
            <View style={GlobalStyles.container}>  
                    <Image source={{uri: props.imageUrl}} style={{height: 50, width: 50}}/>
                    <Text>{props.route.params.data}</Text>
            </View>
        )
    

}
    


export default PokeDetails;

没有逗号值的$ filter number返回

3 个答案: