Limitando o comprimento do texto dinâmico dentro do elemento HTML
function truncateText(selector, maxLength) {
var element = document.querySelector(selector),
truncated = element.innerText;
if (truncated.length > maxLength) {
truncated = truncated.substr(0,maxLength) + '...';
}
return truncated;
}
//You can then call the function with something like what i have below.
document.querySelector('p').innerText = truncateText('p', 107);
Determined Dragonfly