如何解决如何将 img 添加为触摸友好轮播组件的动态数据
这是我写的代码:
import React,{ useEffect,useRef,useState } from 'react';
const Carousel = () => {
const holderRef = useRef();
const menusRef = useRef();
const sliderRef = useRef();
const movingProps = useRef({
startX: undefined,endX: undefined,slideIndex: 0,moveX: undefined,touchMoveX: undefined,longTouch: undefined,slideWidth: 300,numberSlideItem: null,startSlide: false,});
const [,setForceRender] = useState(false);
useEffect(() => {
if (sliderRef.current && movingProps.current.numberSlideItem === null) {
movingProps.current.numberSlideItem = document.querySelectorAll(
'.slide_menus .menu'
).length;
movingProps.current.slideWidth = sliderRef.current.clientWidth;
menusRef.current.style.width =
300 * movingProps.current.numberSlideItem + 'px';
window.addEventListener('mouseup',mouseUp);
}
return () => {
window.removeEventListener('mouseup',mouseUp);
};
},[sliderRef]);
const preventDefault = (e) => {
e.preventDefault();
};
const mouseUpHandle = (e) => {
const {
numberSlideItem,slideIndex,moveX,slideWidth,} = movingProps.current;
e.preventDefault();
var absMove = Math.abs(slideIndex * slideWidth - moveX);
if (absMove > slideWidth / 3) {
if (moveX > slideIndex * slideWidth && slideIndex < numberSlideItem - 1) {
movingProps.current.slideIndex++;
} else if (moveX < slideIndex * slideWidth && slideIndex > 0) {
movingProps.current.slideIndex--;
}
}
menusRef.current.classList.add('animation');
slideTranslateWhenTouch(-movingProps.current.slideIndex * slideWidth);
setForceRender((prev) => !prev);
};
const mouseMoveHandle = (e) => {
const { slideIndex,startX } = movingProps.current;
if (movingProps.current.startSlide) {
movingProps.current.touchMoveX = e.pageX;
// Calculate distance to translate holder.
movingProps.current.moveX =
slideIndex * slideWidth + (startX - movingProps.current.touchMoveX);
slideTranslateWhenTouch(-movingProps.current.moveX);
}
};
const slideTranslateWhenTouch = (s) => {
menusRef.current.style.transform = 'translateX(' + s + 'px)';
};
const mouseDown = (e) => {
preventDefault(e);
movingProps.current.startX = e.nativeEvent.clientX;
movingProps.current.startSlide = true;
menusRef.current.classList.remove('animation');
};
const mouseUp = (e) => {
mouseUpHandle(e);
movingProps.current.startSlide = false;
};
const setIndex = (index) => {
movingProps.current.slideIndex = index;
slideTranslateWhenTouch(
-movingProps.current.slideIndex * movingProps.current.slideWidth
);
setForceRender((prev) => !prev);
};
const touchStart = (e) => {
movingProps.current.startSlide = true;
movingProps.current.longTouch = false;
setTimeout(function () {
window.slider.longTouch = true;
},250);
movingProps.current.startX = e.changedtouches[0].pageX;
menusRef.current.classList.remove('animation');
};
const touchMove = (e) => {
if (movingProps.current.startSlide) {
const { slideIndex,startX } = movingProps.current;
movingProps.current.touchMoveX = e.changedtouches[0].pageX;
movingProps.current.moveX =
slideIndex * slideWidth + (startX - movingProps.current.touchMoveX);
slideTranslateWhenTouch(-movingProps.current.moveX);
}
};
const touchEnd = (e) => {
movingProps.current.startSlide = false;
mouseUpHandle(e);
};
这里的图像是硬编码的,上面只有一个滑动逻辑
return (
<div className="container">
<div ref={sliderRef} id="slider" className="slide-wrap">
<div
ref={holderRef}
id="holder"
onMouseDown={mouseDown}
onMouseMove={mouseMoveHandle}
onmouseup={mouseUp}
onTouchStart={touchStart}
onTouchMove={touchMove}
onTouchEnd={touchEnd}
className="slide_holder"
>
<div id="menus" className="slide_menus animation" ref={menusRef}>
<div className="menu">
<img
id="img"
className="img-responsive"
src="https://d2lm6fxwu08ot6.cloudfront.net/img-thumbs/960w/GFSJVKYET2.jpg"
alt=""
/>
</div>
<div className="menu">
<img
className="slide-img img-responsive"
src="https://d2lm6fxwu08ot6.cloudfront.net/img-thumbs/960w/FH2HGFAG69.jpg"
alt=""
/>
</div>
<div className="menu">
<img
className="slide-img img-responsive"
src="https://d2lm6fxwu08ot6.cloudfront.net/img-thumbs/960w/FH2HGFAG69.jpg"
alt=""
/>
</div>
</div>
</div>
</div>
<div className="dots-list">
<div
onClick={() => setIndex(0)}
className={movingProps.current.slideIndex === 0 ? 'active' : ''}
/>
<div
onClick={() => setIndex(1)}
className={movingProps.current.slideIndex === 1 ? 'active' : ''}
/>
<div
onClick={() => setIndex(2)}
className={movingProps.current.slideIndex === 2 ? 'active' : ''}
/>
</div>
</div>
);
};
export default Carousel;
我想要做的只是让这些 imgs 和 dots 动态组件不是硬编码我只是希望这些图像在不同的组件中,如果我添加一个它会自动将它们添加到滑块中
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