标签：classname 分享 index 动态改变 substring sub lse .com 无法
项目需求，需要根据当前的图片的路径值的来（加或者减）动态改变其值： state定义如下：
this.state={
basket01:0+require("../../img/egg/egg1_00.png"),
basket02:0+require(‘../../img/egg/egg2_00.png‘),
basket03:0+require(‘../../img/egg/egg3_00.png‘),
basket04:0+require(‘../../img/egg/egg4_00.png‘),
}
重点就是前面的数值：
render 代码如下：
<img className="egg-pen" src={this.state.basket01.substring(1,this.state.basket01.length)} />
计算操作的方法代码为：
add (index){
let basket01Num = this.state.basket01.substring(0,1)
let basket02Num = this.state.basket02.substring(0,1)
let basket03Num = this.state.basket03.substring(0,1)
let basket04Num = this.state.basket04.substring(0,1)
let eggSum = this.state.eggSum
this.setState({
eggSum:--eggSum
})
if(index === 1){
++basket01Num
this.setState({
basket01:basket01Num+require(`../../img/egg/egg1_0${basket01Num}.png`)
})
}else if(index === 2){
++basket02Num
this.setState({
basket02:basket02Num+require(`../../img/egg/egg2_0${basket02Num}.png`)
})
}else if(index === 3){
++basket03Num
this.setState({
basket03:basket03Num+require(`../../img/egg/egg3_0${basket03Num}.png`)
})
}else{
++basket04Num
this.setState({
basket04:basket04Num+require(`../../img/egg/egg4_0${basket04Num}.png`)
})
}
}
项目实现的效果：
通过加减来改变图片里面的鸡蛋数量
react img 被自动转成base64,无法根据当前路径来动态改变值的解决办法
标签：classname 分享 index 动态改变 substring sub lse .com 无法
原文地址：https://www.cnblogs.com/keleyz/p/9722014.html
