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Convert all the example components, class to function components. #649

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Nov 22, 2024
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Convert all the example components, class to function components. #649

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78 changes: 33 additions & 45 deletions example/src/App.js
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Original file line number Diff line number Diff line change
@@ -1,50 +1,38 @@
import React, { Component } from 'react'
import Area from './chart-types/Area'
import Bar from './chart-types/Bar'
import Column from './chart-types/Column'
import Line from './chart-types/Line'
import Donut from './chart-types/Donut'
import RadialBar from './chart-types/RadialBar'
import ChartUpdate from './ChartUpdate'
import React, { useState } from "react";
import Area from "./chart-types/Area";
import Bar from "./chart-types/Bar";
import Column from "./chart-types/Column";
import Line from "./chart-types/Line";
import Donut from "./chart-types/Donut";
import RadialBar from "./chart-types/RadialBar";
import ChartUpdate from "./ChartUpdate";

class App extends Component {
constructor (props) {
super(props)
export default function App() {
const [selectedChart, setSelectedChart] = useState("line");

this.changeChart = this.changeChart.bind(this)
const handleChartChange = (e) => {
setSelectedChart(e.target.value);
};

this.state = {
selectedChart: 'line'
}
}
return (
<div className="app">
<select id="lang" value={selectedChart} onChange={handleChartChange}>
<option value="line">Line</option>
<option value="area">Area</option>
<option value="bar">Bar</option>
<option value="column">Column</option>
<option value="radialbar">RadialBar</option>
<option value="donut">Donut</option>
<option value="updateExample">Chart Update Example</option>
</select>

changeChart (e) {
this.setState({selectedChart: e.target.value})
}

render () {
return (
<div className="app">
<select id="lang" value={this.state.selectedChart} onChange={this.changeChart}>
<option value="line" >Line</option>
<option value="area" >Area</option>
<option value="bar" >Bar</option>
<option value="column" >Column</option>
<option value="radialbar" >RadialBar</option>
<option value="donut" >Donut</option>
<option value="updateExample" >Chart Update Example</option>
</select>

{ this.state.selectedChart === 'area' ? (<Area></Area>) : null}
{ this.state.selectedChart === 'bar' ? (<Bar></Bar>) : null}
{ this.state.selectedChart === 'line' ? (<Line></Line>) : null}
{ this.state.selectedChart === 'column' ? (<Column></Column>) : null}
{ this.state.selectedChart === 'radialbar' ? (<RadialBar></RadialBar>) : null}
{ this.state.selectedChart === 'donut' ? (<Donut></Donut>) : null}
{ this.state.selectedChart === 'updateExample' ? (<ChartUpdate></ChartUpdate>) : null}
</div>
)
}
{selectedChart === "area" ? <Area></Area> : null}
{selectedChart === "bar" ? <Bar></Bar> : null}
{selectedChart === "line" ? <Line></Line> : null}
{selectedChart === "column" ? <Column></Column> : null}
{selectedChart === "radialbar" ? <RadialBar></RadialBar> : null}
{selectedChart === "donut" ? <Donut></Donut> : null}
{selectedChart === "updateExample" ? <ChartUpdate></ChartUpdate> : null}
</div>
);
}

export default App
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