limit number of characters javascript code example

Example 1: limit characters display javascript

var str = 'Some very long string';
if(str.length > 10) str = str.substring(0,10);

Example 2: how to limit characters in number input js

function limit(element)
{
    var max_chars = 2;

    if(element.value.length > max_chars) {
        element.value = element.value.substr(0, max_chars);
    }
}


<!-- HTML -->
<input type="number" onkeydown="limit(this);" onkeyup="limit(this);">

Example 3: max char js

function maxChar(str) {
  let charCountObj = {};
  let maxChar = "";
  let maxCount = 0;

  //  Fill out CharCountObj
  //  Updates new MaxCount

  for (let i = 0; i < str.length; i++) {
    const char = str[i];

    charCountObj[char] = charCountObj[char] + 1 || 1;

    if (charCountObj[char] > maxCount) {
      maxChar = char;
      maxCount = charCountObj[char];
    }
  }

  return maxChar;
}