我的函数generateSeriesDataWithColor()似乎在呈现组件或页面之前没有加载。
因此,当加载组件时,seriesWithColor应该立即获取generateSeriesDataWithColor()生成的数据,但在第一次呈现时不会生成数据,相反,如果再次呈现组件,则会显示颜色和图形。
import HighchartsReact from "highcharts-react-official";
import Highcharts from "highcharts";
import './SkillsGraph.scss';
import { Col, Row } from "react-bootstrap";
import HeadingMain from "../../Heading/HeadingMain/HeadingMain";
export default function SkillsGraph(){
const skills = ['HTML5/CSS3/JS', 'Java11', 'PHP', 'MySql', 'MongoDB', 'ReactJS', 'ExpressJS'];
const series = {
name: 'Skill Level',
data: [ 10, 9.5, 7, 9.5, 8, 8.5, 8]
};
const seriesWithColor = generateSeriesDataWithColor(series); // This is where the series is assigned to the var
// Randomly generate colors
function generateRandomColor(){
let maxVal = 0xFFFFFF; // 16777215
let randomNumber = Math.random() * maxVal;
randomNumber = Math.floor(randomNumber);
randomNumber = randomNumber.toString(16);
let randColor = randomNumber.padStart(6, 0);
return `#${randColor.toUpperCase()}`
}
// Generate the data with random conlor
function generateSeriesDataWithColor(seriesData){
const data = seriesData.data;
const dataArray = data.map((item) => {
let color = generateRandomColor();
while(color === "#FFFFFF"){
color = generateRandomColor();
}
let dataObj = {
y: item,
color: color
}
return dataObj;
})
let seriesWithColor = {
name: 'Skill Level',
data: dataArray
}
return seriesWithColor; //This is from where the data/series is returned
}
// Options for the graph
let options = {
chart: {
type: 'bar',
height: 400
},
title: {
align: 'left',
text: 'Skills represented'
},
xAxis: {
categories: skills,
visible: true,
type: 'Skills categorised',
title: {
text: null
}
},
yAxis: {
min: 0,
max: 10,
title: {
text: 'Skill Level',
align: 'high'
},
labels: {
overflow: 'justify'
}
},
plotOptions: {
bar: {
dataLabels: {
enabled: false
}
},
column: {
colorByPoint: true
}
},
colors: [
'#ff0000',
'#00ff00',
'#0000ff',
'#0000ff',
'#0000ff',
'#0000ff',
'#0000ff'
],
legend: {
enabled: true
},
credits: {
enabled: false
},
series: seriesWithColor // This is where the generated data/series is used
}
return (
<Row>
<Col md={3}>
<HeadingMain name="This is Legend"></HeadingMain>
</Col>
<Col md={9}>
<HighchartsReact highcharts={Highcharts} options={options} className="chart"></HighchartsReact>
</Col>
</Row>
)
}
有人能解决这个问题吗?
我尝试使用useEffect钩子来完成想要的任务,但是它给出了一个错误消息-“React钩子useEffect缺少依赖项:'generateSeriesDataWithColor'和'series'。请包含它们或移除相依性数组react-hooks/exhaustive-deps '。(请检查下列程式码)
const [seriesWithColor, setSeries] = useState(null);
useEffect(() => {
generateSeriesDataWithColor(series)
.then(data => setSeries(data))
.catch(err => console.log(err));
}, []);
2条答案
按热度按时间qjp7pelc1#
Series需要是对象数组而不是单个对象:
现场演示:https://codesandbox.io/s/highcharts-react-demo-h4r493?file=/demo.jsx
API引用:https://api.highcharts.com/highcharts/series
laximzn52#
您需要在useEffect挂钩中调用该函数,以确保数据可用。