Skip to content
Create a gist now

Instantly share code, notes, and snippets.

Javascript: Truncate a paragraph to maxLength characters. It does not break a single words. ellipseText is optional (default: … ) It will not work on characters that are not a letter A-Z or number. It backtracks until there is a space and add the ellipseText.
function truncText (text, maxLength, ellipseText){
ellipseText = ellipseText || '…';
if (text.length < maxLength)
return text;
//Find the last piece of string that contain a series of not A-Za-z0-9_ followed by A-Za-z0-9_ starting from maxLength
var m = text.substr(0, maxLength).match(/([^A-Za-z0-9_]*)[A-Za-z0-9_]*$/);
if(!m) return ellipseText;
//Position of last output character
var lastCharPosition = maxLength-m[0].length;
//If it is a space or "[" or "(" or "{" then stop one before.
if(/[\s\(\[\{]/.test(text[lastCharPosition])) lastCharPosition--;
//Make sure we do not just return a letter..
return (lastCharPosition ? text.substr(0, lastCharPosition+1) : '') + ellipseText;

this work for me, thank you

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Something went wrong with that request. Please try again.