<p id="normal">Aenean mattis, metus eget fringilla auctor, ligula quam fermentum est, vitae auctor augue mi eget tellus. Phasellus mattis turpis diam, fringilla pretium est dapibus vitae. Vivamus in aliquet lectus. Mauris eget viverra dolor. Aliquam dapibus urna et leo imperdiet, in malesuada velit suscipit. Nunc porttitor vitae justo non aliquet. Fusce gravida luctus lorem, vel porttitor odio tincidunt at. Vivamus faucibus est eget enim scelerisque, ac molestie arcu mollis. Sed at purus nec mauris pretium lacinia nec ut ante. Phasellus maximus et enim a consectetur. Morbi dui metus, feugiat et tempus vitae, volutpat nec orci. Curabitur eu consequat est, sit amet posuere felis. Phasellus dictum lorem ut nisl aliquet, eu congue tortor suscipit.</p>
<p id="shrunk"></p>
JavaScript
function addBr(sentence, letters, seperator){
letters = letters || 25;
seperator = seperator || "<br/>"
words = sentence.trim().split(" ");
var returnString = "";
var line = "";
while(words.length > 0){
if(line.length < letters){
if(~~line.length){
line += " " + words.shift();
}else{
line += words.shift();
}
}else{
returnString += line + seperator;
line = "";
}
}
if(line !== ""){
returnString += line;
}
return returnString;
}
var normal = document.getElementById("normal");
var shrunk = document.getElementById("shrunk");
shrunk.innerHTML = addBr(normal.textContent);
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