Javascript 如何使用lodash使用一个油门调节多个按钮?
我希望避免并发并将操作限制为每秒1次 这是因为Javascript 如何使用lodash使用一个油门调节多个按钮?,javascript,reactjs,lodash,throttling,debounce,Javascript,Reactjs,Lodash,Throttling,Debounce,我希望避免并发并将操作限制为每秒1次 这是因为onChange事件也会触发持续时间为1s的幻灯片放映,并且触发两次会损坏UI 我最初是从4个去Bounces函数开始的,但最终得出以下结论: import React from 'react'; import { css } from 'styled-components'; import PropTypes from 'prop-types'; import omit from 'lodash.omit'; import throttle fro
onChange
事件也会触发持续时间为1s的幻灯片放映,并且触发两次会损坏UI
我最初是从4个去Bounces函数开始的,但最终得出以下结论:
import React from 'react';
import { css } from 'styled-components';
import PropTypes from 'prop-types';
import omit from 'lodash.omit';
import throttle from 'lodash.throttle';
import Img from '@bootstrap-styled/v4/lib/Img';
export default class ServicesAndSolutionImg extends React.PureComponent {
static propTypes = {
src: PropTypes.string.isRequired,
alt: PropTypes.string.isRequired,
onDigitalSolution: PropTypes.func.isRequired,
onServices: PropTypes.func.isRequired,
onHosting: PropTypes.func.isRequired,
onAddons: PropTypes.func.isRequired,
};
state = {
throttleFn: null,
}
componentWillMount() {
this.setState({
throttleFn: (e) => throttle(this.props[e.target.value], 1000, { leading: false, trailing: true })(),
});
}
render() {
const { src, alt } = omit(this.props, [
'onDigitalSolution',
'onServices',
'onHosting',
'onAddons',
]);
return (
<div css={css`position: relative`}>
<Img fluid src={src} alt={alt} className="w-100 pt-3 pl-5 pr-5" />
<div css={css`
position: absolute;
top: 0;
right: 0;
left: 0;
right: 0;
width: 100%;
height: 100%;
`}>
<div css={css`
position: relative;
width: inherit;
height: inherit;
button {
cursor: pointer;
position: absolute;
top: 23%;
height: 51%;
opacity: 0;
}
button:nth-child(1) {
left: 15%;
width: 16%;
}
button:nth-child(2) {
left: 32%;
width: 16%;
}
button:nth-child(3) {
left: 48%;
width: 16%;
}
button:nth-child(4) {
left: 65%;
width: 16%;
}
`}>
<button onClick={this.state.throttleFn} value="onDigitalSolution" />
<button onClick={this.state.throttleFn} value="onServices" />
<button onClick={this.state.throttleFn} value="onHosting" />
<button onClick={this.state.throttleFn} value="onAddons" />
</div>
</div>
</div>
);
}
}
从“React”导入React;
从“样式化组件”导入{css};
从“道具类型”导入道具类型;
从“lodash.omit”导入省略;
从“lodash.throttle”进口节流阀;
从“@bootstrap styled/v4/lib/Img”导入Img;
导出默认类服务和解决方案IMG扩展React.PureComponent{
静态类型={
src:PropTypes.string.isRequired,
alt:PropTypes.string.isRequired,
onDigitalSolution:需要PropTypes.func,
onServices:PropTypes.func.isRequired,
onHosting:PropTypes.func.isRequired,
onAddons:PropTypes.func.isRequired,
};
状态={
throttleFn:null,
}
组件willmount(){
这是我的国家({
throttleFn:(e)=>throttle(this.props[e.target.value],1000,{leading:false,training:true})(,
});
}
render(){
const{src,alt}=omit(this.props[
“onDigitalSolution”,
“在线服务”,
“onHosting”,
“Onadons”,
]);
返回(
);
}
}
预期
无延迟,每秒单击1次,无并发
结果
1秒延迟,最多4个并发操作
有人知道为什么会失败吗 是一个接受函数并返回限制函数的函数。节流函数在x毫秒的窗口中只调用原始函数一次
多次调用throttle将返回多个throttle函数,您可以调用这些函数,并且每个函数都是时间窗口中唯一的调用
要解决此问题,请将回调上调用throttle的结果指定给组件上的属性,并在注册单击事件时调用该函数
export default class ServicesAndSolutionImg extends React.PureComponent {
static propTypes = {
src: PropTypes.string.isRequired,
alt: PropTypes.string.isRequired,
onDigitalSolution: PropTypes.func.isRequired,
onServices: PropTypes.func.isRequired,
onHosting: PropTypes.func.isRequired,
onAddons: PropTypes.func.isRequired,
};
// create the throttled function
throttleFn = throttle((e) => this.props[e.target.value], 1000, { leading: false, trailing: true })
render() {
// no need to omit anything - you know what you want
const { src, alt } = this.props;
return (
<div css={css`position: relative`}>
<Img fluid src={src} alt={alt} className="w-100 pt-3 pl-5 pr-5" />
<div css={css`
position: absolute;
top: 0;
right: 0;
left: 0;
right: 0;
width: 100%;
height: 100%;
`}>
<div css={css`
position: relative;
width: inherit;
height: inherit;
button {
cursor: pointer;
position: absolute;
top: 23%;
height: 51%;
opacity: 0;
}
button:nth-child(1) {
left: 15%;
width: 16%;
}
button:nth-child(2) {
left: 32%;
width: 16%;
}
button:nth-child(3) {
left: 48%;
width: 16%;
}
button:nth-child(4) {
left: 65%;
width: 16%;
}
`}>
<button onClick={this.throttleFn} value="onDigitalSolution" />
<button onClick={this.throttleFn} value="onServices" />
<button onClick={this.throttleFn} value="onHosting" />
<button onClick={this.throttleFn} value="onAddons" />
</div>
</div>
</div>
);
}
}
导出默认类服务和解决方案IMG扩展React.PureComponent{
静态类型={
src:PropTypes.string.isRequired,
alt:PropTypes.string.isRequired,
onDigitalSolution:需要PropTypes.func,
onServices:PropTypes.func.isRequired,
onHosting:PropTypes.func.isRequired,
onAddons:PropTypes.func.isRequired,
};
//创建节流函数
throttleFn=throttle((e)=>this.props[e.target.value],1000,{leading:false,training:true})
render(){
//不需要遗漏任何东西-你知道你想要什么
const{src,alt}=this.props;
返回(
);
}
}