我开始涉足ReactJS,我试图向标签传递一个JSON对象,这样我就可以在UI中显示它,但它一直在说找不到该元素.有什么帮助吗？还是为什么props对象没有JSON对象？提前致谢

var CommentBox = React.createClass({
  render: function() {
    return (
        <div className="img-container">
            <img src="{this.props.placementImage}" />
        </div>
    );
  }
});

var MP = [
    {
        id: "MP1001",
        placementImage: "https://www.aexp-static.com/intl/uk/rwd/images/UKHP_CM_promo_3.png",
        dts: "forever",
        dte: "forever",
        status: "",
        isDefault: false
    }
];

ReactDOM.render(
        <CommentBox mp={MP}/>,
        document.getElementById('content')
);

解决方法:

几件事：

>您正在传递一个数组作为mp prop,但随后尝试像对象一样访问它.
>您需要从< img>中删除引号src属性：

>您需要访问实际的mp prop

作为参考,我从您的代码中创建了一个JSBin示例,该示例解决了以下问题：http://jsbin.com/bohoqa/edit?html,js,output

var CommentBox = React.createClass({
  render: function() {
    return (
        <div className="img-container">
            <img src={this.props.mp.placementImage} />
        </div>
    );
  }
});

var MP = [
    {
        id: "MP1001",
        placementImage: "https://www.aexp-static.com/intl/uk/rwd/images/UKHP_CM_promo_3.png",
        dts: "forever",
        dte: "forever",
        status: "",
        isDefault: false
    }
];

ReactDOM.render(
        <CommentBox mp={MP[0]}/>,
        document.getElementById('content')
);