Render new element onClick in react.js

Question

I'm new to react and am trying to render a new element onClick:

      var LoginButton = React.createClass({
       ..............
       ..............
      clickHandle : function() {
        this.rememberMe = {
            active: localforage.getItem('rememberMe', function (err, key) {
                return key;
            })
        };
        if (this.rememberMe.active == true || this.rememberMe.active == 'checked')
        {
            document.getElementById('loginForm').submit();
        }
        else {
            React.render(<wantToRemember />, document.getElementById('loginbuttonhere'));
        }
        return this.rememberMe.active;

    },

This is the element that should appear:

var wantToRemember = React.createClass({
        getInitialState : function () {
            return {
                position: 'absolute',
                display: 'block',
                top: '20px',
                width: '100px',
                height: '100px'
            }
        },

        render : function () {
            return (
                    <div className="rememberPopup" style={this.state}>
                        <div className="row">
                            <div className="staylogin">
                                <div className="col-md-4">
                                    <label for="checkbox">Angemeldet bleiben</label>
                                </div>
                                <div className="col-md-1">
                                    <input type="checkbox" id="checkbox" name="remember" />
                                    </div>
                                </div>
                            </div>
                    </div>
            );
        }
    });

but it doesn't appear, instead react renders this html:

<wanttoremember data-reactid=".1"></wanttoremember>

I'm pretty sure I'm doing some pretty basic stuff wrong, but can't figure out what. Isn't it possible to call different elements like this?

Cristik · Accepted Answer · 2015-04-22 15:04:21Z

11

Your react.js component name begins with a lower-case letter, it should start with an upper-case leter: var WantToRemember = React.createClass(...) and React.render(<WantToRemember />,....

The JSX compiler requires for component names to begin with an upper-case letter (see jsx docs on this):

To render a React Component, just create a local variable that starts with an upper-case letter:

var MyComponent = React.createClass({/*...*/});
var myElement = <MyComponent someProperty={true} />;
React.render(myElement, document.getElementById('example'));

edited Apr 22, 2015 at 15:04

answered Apr 22, 2015 at 13:42

Cristik

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Comments

James Waddington · Accepted Answer · 2015-04-22 13:33:07Z

2

You should pass a React element to React.render instead of the tag itself, something like this:

React.render(
  React.createElement(wantToRemember)
);

answered Apr 22, 2015 at 13:33

James Waddington

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1 Comment

WiredPrairie Over a year ago

This answer is actually a more correct JSX behavior and pattern: stackoverflow.com/a/29799455/95190

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