功能中定位点击的卡索引

功能中定位点击的卡索引

我是React的新手。尝试制作一个购物车,其中有一组数据作为要出售的商品,这些商品正在循环显示并在DOM上显示为Cards。我想知道用户单击数组中的哪个项目,以便将其添加到购物车中。

这是我的代码。如果我不确定,请问任何问题

import React, { Component } from "react";
import "./css/Card.css";

import Data from "./DummyData";

class Card extends Component {
    state = {
        zoom: false,
        NumberOfItemsInCart: 0,
        itemsInCart : [] ,
        selectedCard : ''
};

render() {
// Method Target the selected Card and Zoom it
const handleCheck = (e) => {
  this.setState({
    zoom : true,
    selectedCard : ?????
  })
};

const addItem = () => {
    this.props.addItemToCart(this.state.NumberOfItemsInCart)
    //////////// ADD THE NAME OF THE ITEM SELECTED in Cart Array /////////
}
const DeleteItem = () => {
    this.props.DeleteItemFromCart(this.state.NumberOfItemsInCart)
    //////////// DELETE THE NAME OF THE ITEM SELECTED From Aray /////////
}

return (
  <div className="band">
    {Data.map((item, index) => {
      return (
        <div key={item.id} className="items" onClick={handleCheck} index={this.state.index}>
            <div className="thumb">{item.title} </div>
            <img className="item-images" src={item.img} alt={item.title} />
            <div className="item-footer"> Price ${item.price}/lb </div>
            <button className="btn btn-details" > Details </button>
            <button onClick={addItem}  className="btn btn-danger"> + </button>
            <button onClick={ DeleteItem}  className="btn btn-danger"> - </button>
        </div>
      );
    })}
  </div>
);
}
}

export default Card;

最佳答案

您可以将id作为参数传递,更改

onClick={handleCheck}




onClick={() => handleCheck(item.id)}


handleCheck()

const handleCheck = (id) => {
  this.setState({
    zoom : true,
    selectedCard : id
  })
};

关于javascript - 在 map 功能中定位点击的卡索引,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/50830735/

10-11 23:25