React.createElement throws Component not defined
Question
I'm currently playing around with ReactJS using TypeScript as the underlying language wher I define my components.
I saw on many sites, that it is possible to render such components within a page (in my case cshtml ). Especially here which I tried to accomplish. To do so there should be something like:
<!-- ... -->
<body>
<div id="myTargetId"></div>
</body>
<!-- ... -->
<script src="@(Url.Content("~/Scripts/React/dist/commons.js"))"></script>
<script src="@(Url.Content("~/Scripts/React/dist/MyComponent.js"))"></script>
<script>
ReactDOM.render(React.createElement(MyComponent, {}), document.getElementById("targetId"));
</script>
Currently I get the following error:
Uncaught ReferenceError: MyComponent is not defined
This is what my MyComponent.tsx looks like:
import * as React from "react";
export interface IMyComponentProps { }
export interface IMyComponentState { }
export class MyComponent extends React.Component<IMyComponentProps, IMyComponentState> {
render(): JSX.Element {
return (
<p>This comes from ReactJs</p>
);
}
}
To pack this all together I am using webpack with the following webpack.config.js (simplified):
const webpack = require("webpack");
module.exports = {
entry: {
MyComponent: "./Scripts/React/Modules/MyComponent.tsx"
},
output: {
path: path.join(__dirname, "./Scripts/React/dist/"),
filename: "[name].js"
},
externals: {
"react": "React",
"react-dom": "ReactDOM"
}
};
And, finally, this is the emitted JavaScript :
webpackJsonp([0],[
/* 0 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const React = __webpack_require__(1);
class MyComponent extends React.Component {
render() {
return (React.createElement("p", null, "This comes from ReactJs"));
}
}
exports.MyComponent = MyComponent;
/***/ }),
/* 1 */
/***/ (function(module, exports) {
module.exports = React;
/***/ })
],[0]);
//# sourceMappingURL=MyComponent.js.map
What am I missing here?
1 answers
solution1
0 2017-10-18 23:24:10
Uncaught ReferenceError: MyComponent is not defined
Your import is wrong:
<script src="@(Url.Content("~/Scripts/React/dist/commons.js"))"></script>
<script src="@(Url.Content("~/Scripts/React/dist/MyComponent.js"))"></script>
You should be building a bundle.js using webpack.
More
One of many quickstarts on the internet https://basarat.gitbooks.io/typescript/docs/quick/browser.html
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