text truncate javascript code example

Example 1: determine text truncate javascript

/**
 * Check if an element is truncated.
 */
function isTruncated(el) {
  return el.scrollWidth > el.clientWidth
}

Example 2: Truncate a string

function truncateString(str, num) {
 
  if (str.length > num) {
    return str.slice(0, num) + "...";
  } else {
    return str;
  }
}

truncateString("Lorem Ipsum placeholder text in any number of characters, words sentences or paragraphs", 9)  // returns Lorem Ips...