Serge van den Oever Serge van den Oever - 2 months ago 45
React JSX Question

React img tag issue with url and class

I have the following simple react code in my JSX file:

/** @jsx React.DOM */

var Hello = React.createClass({
render: function() {
return <div><img src='http://placehold.it/400x20&text=slide1' alt={event.title} class="img-responsive"/><span>Hello {this.props.name}</span></div>;
}
});

React.renderComponent(<Hello name="World" />, document.body);


The output in the DOM is as follows:

<div data-reactid=".0">
<img src="http://placehold.it/400x20undefined1" data-reactid=".0.0">
<span data-reactid=".0.1">
<span data-reactid=".0.1.0">Hello </span>
<span data-reactid=".0.1.1">World</span>
</span>
</div>


I have two issues with it:



Any ideas?

Answer Source

Remember that your img is not really a DOM element but a javascript expression.

  1. This is a JSX attribute expression. Put curly braces around the src string expression and it will work. See http://facebook.github.io/react/docs/jsx-in-depth.html#attribute-expressions

  2. In javascript, the class attribute is reference using className. See the note in this section: http://facebook.github.io/react/docs/jsx-in-depth.html#react-composite-components

    /** @jsx React.DOM */
    
    var Hello = React.createClass({
        render: function() {
            return <div><img src={'http://placehold.it/400x20&text=slide1'} alt="boohoo" className="img-responsive"/><span>Hello {this.props.name}</span></div>;
        }
    });
    
    React.renderComponent(<Hello name="World" />, document.body);