I would avoid using `dangerouslySetInnerHTML`.
You can do something like:
<!-- begin snippet: js hide: false console: true babel: true -->
<!-- language: lang-js -->
function SpecialWord({ children }) {
return <strong>{children}</strong>;
}
function Component() {
const segmenter = new Intl.Segmenter([], {
granularity: 'word'
});
const parts = Array.from(segmenter.segment("This is my text Albert is my special word")).map(part => part.segment);
return parts.map((part, index) => {
if (part === "Albert") {
return <SpecialWord key={index}>Albert</SpecialWord>;
}
return part;
})
}
ReactDOM.render(
<Component />,
document.getElementById("root")
);
<!-- language: lang-html -->
<div id="root"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
<!-- end snippet -->
A couple of notes:
- You need a way to split the sentence in an array, so that you can use `map` over the words of the sentence and output a React component for the special word. I used `Intl.Segmenter` which is fairly new and might not be supported on older browsers. Also, you might want to match things like "special word". `Intl.Segmenter` splits in words so you won't be able to match multiple words.
- I used `key={index}`, using an index as key is often a mistake. In this case it works because we don't have a unique ID for each word.
- Instead of passing the special word as child, it's better to use a property for this: `<SpecialWord word={part} />` (React children are kinda hard to work with)
I hope this helps!
React circa 2020
----------------
In the `onClick` callback, call the [state hook's][1] setter function to update the state and re-render:
<!-- begin snippet: js hide: false console: true babel: true -->
<!-- language: lang-js -->
const Search = () => {
const [showResults, setShowResults] = React.useState(false)
const onClick = () => setShowResults(true)
return (
<div>
<input type="submit" value="Search" onClick={onClick} />
{ showResults ? <Results /> : null }
</div>
)
}
const Results = () => (
<div id="results" className="search-results">
Some Results
</div>
)
ReactDOM.render(<Search />, document.querySelector("#container"))
<!-- language: lang-html -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.1/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.1/umd/react-dom.production.min.js"></script>
<div id="container">
<!-- This element's contents will be replaced with your component. -->
</div>
<!-- end snippet -->
[JSFiddle][2]
React circa 2014
----------------
The key is to update the state of the component in the click handler using `setState`. When the state changes get applied, the `render` method gets called again with the new state:
<!-- begin snippet: js hide: false console: true babel: true -->
<!-- language: lang-js -->
var Search = React.createClass({
getInitialState: function() {
return { showResults: false };
},
onClick: function() {
this.setState({ showResults: true });
},
render: function() {
return (
<div>
<input type="submit" value="Search" onClick={this.onClick} />
{ this.state.showResults ? <Results /> : null }
</div>
);
}
});
var Results = React.createClass({
render: function() {
return (
<div id="results" className="search-results">
Some Results
</div>
);
}
});
ReactDOM.render( <Search /> , document.getElementById('container'));
<!-- language: lang-html -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.6.2/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/15.6.2/react-dom.min.js"></script>
<div id="container">
<!-- This element's contents will be replaced with your component. -->
</div>
<!-- end snippet -->
[JSFiddle][3]
[1]: https://reactjs.org/docs/hooks-state.html
[2]: https://jsfiddle.net/khx30pnv/
[3]: http://jsfiddle.net/kb3gN/15084/
