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I want to search my textarea for "\n" line breaks but I want two line spaces to be the maximum.

What formula can I use in this regex so that it looks for anything over three \n's in a row ("\n\n\n") and replaces it with just one <br> ?

this.replace(new RegExp('\n', 'gim') , '<br/>');

I want to search my textarea for "\n" line breaks but I want two line spaces to be the maximum.

What formula can I use in this regex so that it looks for anything over three \n's in a row ("\n\n\n") and replaces it with just one <br> ?

this.replace(new RegExp('\n', 'gim') , '<br/>');
  • javascript
  • jquery
  • regex
  • replace
  • textarea
Share Improve this question edited Nov 24, 2011 at 9:24 lucapette 20.7k6 gold badges67 silver badges59 bronze badges asked Nov 24, 2011 at 8:02 TimTim 7,0568 gold badges40 silver badges57 bronze badges 0
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4 Answers 4

Reset to default 9 
this.replace(new RegExp('(\n){3,}', 'gim') , '<br/>');

This will replace 3 or more \n's with a br, make that 4 if you want 4 or more.

var newString = "some \n\n\n\n\n string".replace(/\n{3,}/g, '<br/>');

alert(newString);

Did you try this?

this.replace(new RegExp('\\n+', 'gim') , '<br/>');

You can avoid using RegExp with:

this.replace(/\n+/g, '<br />')

this.replace(/[\n]{3,}/g,'<br/>');

本文标签： javascriptReplacing more than two line breaks with regexStack Overflow

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