Input number com maxlength

rck_input_number_with_maxlength.html

<p>Number Input</p>
<input type="number" id="el_number" min="1" max="99" maxlength="2" />
<style>
input{
  width : 200px;
  height: 30px;
}
</style>
<script>
let numb = document.getElementById("el_number");
numb.addEventListener('input', function(){
      if(this.value.length > this.maxLength){
        this.value = this.value.slice(0, this.maxLength);
      }
});
</script>