问题描述
该代码从图库中选择了一张图片,但无法取消选择它只在图片点击两次时显示警告消息:
const selectItem = (event,img) => {
let element = event.target;
element.classList.add('added');
let item = sliders.indexOf(img);
if (item === -1) {
sliders.push(img);
} else {
alert('already added');
}
}
解决方法
这应该有效
const selectItem = (event,img) => {
let element = event.target;
element.classList.add('added');
let item = sliders.indexOf(img);
if (item === -1) {
sliders.push(img);
} else {
sliders.pop(img);
}
}