【React 小案例】的简单问题,请前辈您指点一下,谢谢^_^。

通过这个网址可以访问在线编辑器:http://runjs.cn/code/vgipwvdu 链接内容如下图
问题在图中用红字标注▼

https://img2.mukewang.com/5becd752000191d609430691.jpg

【以下代码】和【图中的】和【在线编辑器的】都是一样的代码。

https://img.mukewang.com/5becd7610001dbf706250707.jpg

杨__羊羊
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1回答

拉丁的传说

&nbsp; &nbsp; render_one_box:function(value,i){&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return (&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div className="one-box" index={i}&nbsp; key={i} >&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <p>{value} {i}</p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <button onClick={this.fn_del.bind(this, i)}>删除</button>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; )没有props传进来,fn_del的参数是undefined啊
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