React Newline to break (nl2br)

Because you know that everything in React is functions, you can’t really do this

this.state.text.replace(/(?:\r\n|\r|\n)/g, '<br />')

1	this.state.text.replace(/(?:\r\n\|\r\|\n)/g, '<br />')

Since that would return a string with DOM nodes inside, that is not allowed either, because has to be only a string.

You then can try do something like this:

{this.props.text.split(“\n”).map(function(item) {<br>  return (<br>    {item}<br>    <br/><br>  )<br>})}

1	{this.props.text.split(“\n”).map(function(item) {<br> return (<br> {item}<br> <br/><br> )<br>})}

That is not allowed either because again React is pure functions and two functions can be next to each other.

tldr. Solution

{this.props.text.split('\n').map(function(item, key) {<br>  return (<br>    <span key={key}><br>      {item}<br>      <br/><br>    </span><br>  )<br>})}

1	{this.props.text.split('\n').map(function(item, key) {<br> return (<br> <span key={key}><br> {item}<br> <br/><br> </span><br> )<br>})}

Now we’re wrapping each line-break in a span, and that works fine because span’s has display inline. Now we got a working nl2br line-break solution.

And ES6 version

{this.props.text.split('\n').map((item, key) => {<br>  return <span key={key}>{item}<br/></span><br>})}

1	{this.props.text.split('\n').map((item, key) => {<br> return <span key={key}>{item}<br/></span><br>})}

And with React Fragments

{this.props.text.split('\n').map((item, key) => {<br>  return <code><Fragment key={key}></code>{item}<br/></Fragment><br>})}

1	{this.props.text.split('\n').map((item, key) => {<br> return <code><Fragment key={key}></code>{item}<br/></Fragment><br>})}

From： https://medium.com/@kevinsimper/react-newline-to-break-nl2br-a1c240ba746

tldr. Solution

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