Truncate a string

var string = "ABCDEFG";
var truncString = string.substring(0, 3); //Only keep the first 3 characters
console.log(truncString); //output: "ABC"

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...