ReactJS - how create two or more components in same page

Question

I'm new user of ReactJS and I bumped in a point. I'm creating a generic map component, it works perfectly. However, only can render one component by page. I would like to instead use getElementById , I could use getElementsByClassName .

Is it possible? I would like to leave my system generic, where I use many components in same page.

In the example, I use to render 1 map, but if I want to use with 2 or more maps?

<div class="MyMap" comp-url="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d3538.7513696363594"></div>
<div class="MyMap" comp-url="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d322231313138.7513696363594"></div>

I would like to use:

ReactDOM.render( React.createElement(MyMap, null) , document.getElementsByClassName('MyMap'));

Code with 1 map example:

 /******/ (function(modules) { // webpackBootstrap /******/ // The module cache /******/ var installedModules = {}; /******/ // The require function /******/ function __webpack_require__(moduleId) { /******/ // Check if module is in cache /******/ if(installedModules[moduleId]) /******/ return installedModules[moduleId].exports; /******/ // Create a new module (and put it into the cache) /******/ var module = installedModules[moduleId] = { /******/ exports: {}, /******/ id: moduleId, /******/ loaded: false /******/ }; /******/ // Execute the module function /******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__); /******/ // Flag the module as loaded /******/ module.loaded = true; /******/ // Return the exports of the module /******/ return module.exports; /******/ } /******/ // expose the modules object (__webpack_modules__) /******/ __webpack_require__.m = modules; /******/ // expose the module cache /******/ __webpack_require__.c = installedModules; /******/ // __webpack_public_path__ /******/ __webpack_require__.p = ""; /******/ // Load entry module and return exports /******/ return __webpack_require__(0); /******/ }) /************************************************************************/ /******/ ([ /* 0 */ /***/ function(module, exports) { var MyMap = React.createClass({displayName: "MyMap", getDefaultProps: function() { return { widthMap: 600, heightMap: 450 } }, getInitialState: function() { return { url: '' } }, componentWillMount: function() { if ($('#MyMap').attr('comp-url') !== undefined) { this.state.url = $('#MyMap').attr('comp-url'); } this.setState({}); }, render: function() { return (React.createElement("iframe", {src: this.state.url, width: this.props.widthMap, height: this.props.heightMap, frameborder: "0", allowfullscreen: true})); } }); ReactDOM.render( React.createElement(MyMap, null) , document.getElementById('MyMap')); /***/ } /******/ ]);

 <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <script src="https://facebook.github.io/react/js/react.js"></script> <script src="https://facebook.github.io/react/js/react-dom.js"></script> </head> <body> <div id="a"></div> <div id="MyMap" comp-url="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d3538.7513696363594!2d-48.51497268432733!3d-27.508106824924692!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x952746f0c86515b1%3A0xe8ccb33700020efe!2sCorporate+Park!5e0!3m2!1spt-BR!2sbr!4v1448470435091"></div> </body> </html>

Answer 1

You can just iterate the result from getElementsByClassName:

function renderEls(elements) {
    for (var i = 0; i < elements.length; i++) {
        if( $(elements[i]).attr('comp-url') !== undefined ) {
            var url = $(elements[i]).attr('comp-url');
        }
        ReactDOM.render(<MyMap url={url} />, elements[i]);
    }
}

renderEls(document.getElementsByClassName("MyMap"));

Answer 2

I use jsx with react, you can create a react component that holds all your maps

var MapContainer = React.createClass({
    renderMyMaps: function() {
        return this.props.myMaps.map( function(map, index) {
            return <MyMap url={map.url} widthMap={} heightMap={}/>
            }
        )
    }

    render: function() {
        return (
            <div className="mapContainer">
                { this.renderMyMaps() }
            </div>
        )
    }
})

var MyMap = React.createClass({displayName: "MyMap",
    getDefaultProps: function() {
        return {
            widthMap: 600,
            heightMap: 450
        }
    },
    getInitialState: function() {
        return {
            url: ''
        }
    },
    render: function() {
        return (
            <iframe
                src={this.props.url}
                width={this.props.widthMap}
                height={this.props.heightMap}
                frameborder=0
                allowfullscreen={true} />
        );
    }
});


var maps = [
    {url: '', widthMap: '', heightMap: ''},
    ...
]

ReactDOM.render(<MapContainer myMaps={maps} />,document.getElementById('MyMap'));

with this approach, it might be easier for you to just add to the myMaps property.

you can also just create a container that will output its children.

render(){
    return (
        <div className="MapContainers">
            { this.props.children }
        </div>
    )
 }

the just put all the MyMap that you will create inside MapContainer

<MapContainer>
    <MyMap />
    ...
</MapContainer>

Answer 3

If you are using jQuery (I saw you included it on header), you can do this:

$(".MyMap").each(function() {
    ReactDOM.render(<MyMap url={$(this).attr('comp-url')} />, this);
});

ReactJS - how create two or more components in same page

Question

3 answers

solution1
1 ACCPTED 2015-11-25 19:47:34

solution2
0 2015-11-26 02:25:28

solution3
-1 2015-11-26 00:14:36

ReactJS - how create two or more components in same page

Question

3 answers

solution1 1 ACCPTED 2015-11-25 19:47:34

solution2 0 2015-11-26 02:25:28

solution3 -1 2015-11-26 00:14:36

solution1
1 ACCPTED 2015-11-25 19:47:34

solution2
0 2015-11-26 02:25:28

solution3
-1 2015-11-26 00:14:36