How to change Phone number format in input as you type?

My CodePen: http://codepen.io/leongaban/pen/cyaAL

I have an input field for a phone number which allows up to 20 characters (for international numbers).

I'm also using the Masked input jQuery plugin by Josh Bush to format the phone number in the input to make it 'pretty'.

• My problem is that in the requirements when the phone is 10 digits or less, it should use the Masked input formatting.

• However when the phone number is longer then 10 digits, the formatting should be removed.

Here is my current: CodePen, Cell Phone is the input field where I'm trying to accomplish this. Work Phone is an example of the default functionality of the Mask input plugin.

How would you go about this problem?

jQuery for Cell Phone input field:

case '2':
    console.log('created phone input');
    $('.new_option').append(myphone);
    $('.added_mobilephone').mask('(999) 999-9999? 9');
    $('.added_mobilephone').keypress(function(event){

      if (this.value.trim().length > 10) {
        console.log('this.value = '+this.value.trim());
        console.log('greater then 10');
        $('.added_mobilephone').mask('99999999999999999999');
      }

      /*if (this.value.length < 9) {
        console.log(this.value);
        console.log('less then 10');
        $('.added_mobilephone').mask('(999) 999-9999? 9999999999');
      } else if (this.value.length > 9) {
        console.log(this.value);
        console.log('greater then 10');
        $('.added_mobilephone').mask('99999999999999999999');
      }*/
    });
    break;

You've probably already solved this problem, but it's worth noting for future reference that anyone else with the need to apply multiple masks to a control may want to explore this inputmask plugin.

It has more callbacks, settings and many out of the box mask types(be sure to take a look at the extension files). You can also define multiple masks for a control, and the plugin will try and apply the appropriate mask based on the value.

Here is a fiddle to demo the previous statement:

$(window).load(function()
{
   var phones = [{ "mask": "(###) ###-####"}, { "mask": "(###) ###-##############"}];
    $('#textbox').inputmask({ 
        mask: phones, 
        greedy: false, 
        definitions: { '#': { validator: "[0-9]", cardinality: 1}} });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.inputmask/3.1.62/jquery.inputmask.bundle.js"></script>
<input type='text' id='textbox' />