我用 “create-react-app” 生成的项目,发现Onclick button没有效果。chrome console 给出这个error:
invariant.js:38 Uncaught Invariant Violation: addComponentAsRefTo(...): Only a ReactOwner can have refs. You might be adding a ref to a component that was not created inside a component's `render` method, or you have multiple copies of React loaded (details: https://fb.me/react-refs-must-have-owner).
同样的code在其他project里就work。
import React from 'react';
const MyComponent = React.createClass({
myClick: function () {
alert("Hello World!");
},
render: function() {
return(
<div>
<button onClick={this.myClick}>Click Me</button>
</div>
);
}
});
export default MyComponent;