Javacsript::Reducing text by word limit

Reducing text by word limit

function excerpt(str, nwords) {

  var words = str.split(' ');

  words.splice(nwords, words.length-1);

  return words.join(' ') +

    (words.length !== str.split(' ').length ? '…' : '');

}

It allows you to truncate a string to a particular number of words and it adds ellipsis if necessary. It works with text that may have other inline tags such as strong or em or links.