Reactjs键警告甚至键已设置

Question

控制台显示此警告，即使在子组件上设置了密钥：

bundle.js:2215 Warning: Each child in an array or iterator should have a unique "key" prop

到目前为止

代码：

 var requestList = this.state.data.map(function (request,index) {
            return (
                <Requests key={request.id}  info={request} index={index}  trigger={this.triggerChildRequests}></Requests>
            );
        }.bind(this));

Answer 1

可能request.id未定义，请尝试使用index作为组件的密钥。

var requestList = this.state.data.map(function (request,index) {
            return (
                <Requests key={index}  info={request} index={index}  trigger={this.triggerChildRequests}></Requests>
            );
        }.bind(this));