react hooks & component will unmount & useEffect & clear up
2024-09-07 02:42:16
react hooks & component will unmount & useEffect & clear up
useEffect & return === unmounted
import React, {
// Component,
useState,
// useRef,
useEffect,
} from 'react';
import { getTrackPicsIdImg } from '@/services';
import "./index.css";
import {
Icon,
Popover,
} from "antd";
const IconsSlot = (props) => {
const [unmount, setUnmount] = useState(false);
const [url, setUrl] = useState(null);
const [visible, setVisible] = useState(false);
useEffect(() => {
// clear up === unmounted
return () => {
setUnmount(true);
};
}, [unmount]);
const handleVisibleChange = () => {
if(!unmount) {
setVisible(false);
}
};
const gotoUserPageById = (id = ``, type = ``, callback) => {
callback(id);
if(id) {
alert(`got user page`, id, type);
}
};
const showScreenShots = (id = ``, type = ``, callback) => {
// callback(id, type);
if(id) {
getTrackPicsIdImg(id)
.then(res => {
const {
url,
} = res.data;
if(url) {
if(!unmount) {
setVisible(true);
setUrl(url);
}
} else {
if(!unmount) {
setVisible(false);
}
}
// console.log(`res.data`, res.data);
});
}
};
const {
icons,
options,
idCallback,
screenShotCallback,
} = props;
const {
// url,
id,
type,// 1 是页面; 2 是控件
} = options;
return(
<>
{
icons[0]
&&
<span className="icon-user-box" onClick={() => gotoUserPageById(id, type, idCallback)}>
<Icon type="user" className="space-span" />
</span>
}
{
!icons[1]
&&
<span className="icon-image-box" onClick={() => showScreenShots(id, type, screenShotCallback)}>
<Popover
content={
<img
src={url}
alt="截图"
className="image-screenshot"
/>
}
visible={visible}
trigger="click"
onVisibleChange={handleVisibleChange}
>
<Icon type="file-image" className="space-span" />
</Popover>
</span>
}
</>
);
};
export default IconsSlot;
https://stackoverflow.com/questions/53464595/how-to-use-componentwillmount-in-react-hooks
react hooks & need inside function
useRef bug
bug
// ?
// import React from "react";
// import { connect } from 'dva';
import React, {
// Component,
// useRef,
useState,
// useEffect,
} from 'react';
// import ReactDOM from 'react-dom';
import { getTrackPicsIdImg } from '@/services';
// import { checkFetchIsAborting } from '@/utils/urlUtils';
import "./index.css";
import {
Icon,
// Modal,
Popover,
} from "antd";
const IconsSlot = (props) => {
// const imageRef = useRef(null);
const [url, setUrl] = useState(null);
const [visible, setVisible] = useState(false);
const handleVisibleChange = () => {
setVisible(false);
};
const gotoUserPageById = (id = ``, type = ``, callback) => {
callback(id);
if(id) {
alert(`got user page`, id, type);
}
};
const showScreenShots = (id = ``, type = ``, callback) => {
// callback(id, type);
// const dom = ReactDOM.findDOMNode(imageRef.current);
if(id) {
getTrackPicsIdImg(id)
.then(res => {
const {
url,
} = res.data;
if(url) {
setVisible(true);
setUrl(url);
// Modal.info({
// wrapClassName: "image-screenshot-box",
// title: '截图',
// content: (
// <div>
// <img
// src={url}
// // src="http://s1.xmcdn.com/yx/user-analysis-fe/last/dist/static/logo.6ecf7074.png"
// alt="screenshot"
// className="image-screenshot"
// />
// </div>
// ),
// onOk() {},
// okText: "关闭",
// });
} else {
setVisible(false);
}
// console.log(`res `, res);
console.log(`res.data`, res.data);
});
}
};
const {
icons,
options,
idCallback,
screenShotCallback,
} = props;
const {
// url,
id,
type,// 1 是页面; 2 是控件
} = options;
return(
<>
{
icons[0]
&&
<span className="icon-user-box" onClick={() => gotoUserPageById(id, type, idCallback)}>
<Icon type="user" className="space-span" />
</span>
}
{
!icons[1]
&&
<span className="icon-image-box" onClick={() => showScreenShots(id, type, screenShotCallback)}>
<Popover
content={
<img
src={url}
alt="截图"
className="image-screenshot"
/>
}
visible={visible}
trigger="click"
onVisibleChange={handleVisibleChange}
>
<Icon type="file-image" className="space-span" />
{/* <Icon type="file-image" className="space-span" ref={imageRef} /> */}
</Popover>
</span>
}
{/* {
!icons[1]
&&
<span className="icon-image-box" onClick={() => showScreenShots(id, type, screenShotCallback)}>
<Icon type="file-image" className="space-span" ref={imageRef} />
</span>
} */}
</>
);
};
export default IconsSlot;
OK
import React, {
useState,
useEffect,
useRef,
} from 'react';
import ReactDOM from 'react-dom';
import StepBox from './StepBox';
import ChartBox from './ChartBox';
import {
STEPS,
} from './STEPS';
import "./index.css";
import {
Row,
Col,
} from "antd";
const stepsShaper = (steps = [], total = 0) => {
const len = steps.length;
return steps.map(
(obj, i) => {
const index = i + 1;
const {
id,
name,
count,
type,
screenshot,
} = obj;
return {
id,
title: name,
num: count,
type,
url: screenshot,
value: (index === len) ? total : steps[index].transRate,
};
}
);
};
const StepsGenerator = (props) => {
const widthRef = useRef(null);
const refClick = () => {
const dom = ReactDOM.findDOMNode(widthRef.current);
const width = dom ? dom.getBoundingClientRect().width : 50;
return width - 50;
};
const [width, setWidth] = useState(null);
useEffect(() => {
const width = refClick();
setWidth(width);
}, [width], refClick);
const {
titleSlot,
iconsSlot,
dataSource,
} = props;
const {
steps,
total,
} = dataSource;
if(!steps.length) {
return(
<Row>
<Col span={24}>
<div className="funel-chart-no-data">
暂无数据!
</div>
</Col>
</Row>
);
}
return stepsShaper(steps, total).map((data, i) => {
return (
<Row className="funnel-chart-container" key={`uid_100${i}`}>
<Col span={8} className="step-box">
<StepBox
step={STEPS[i]}
data={data}
titleSlot={titleSlot}
iconsSlot={iconsSlot}
/>
</Col>
<Col span={16} className="chart-box" ref={widthRef}>
<ChartBox
isFirst={i === 0}
data={data}
refClick={refClick}
/>
</Col>
</Row>
);
});
};
const FunnelChart = (props) => {
const {
titleSlot,
iconsSlot,
dataSource,
} = props;
return (
<>
<StepsGenerator
titleSlot={titleSlot}
iconsSlot={iconsSlot}
dataSource={dataSource}
/>
</>
);
};
export default FunnelChart;
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