Describes the structure of the mask. If a regexp is provided, it should allow both the final full string element as well as partial strings as the user types characters one by one.
[
{
length: [1, 2],
regexp: /^1[1-2]$|^[0-9]$/,
placeholder: 'hh',
},
{
fixed: ':',
},
...
]The size of the text for MaskedInput.
{
"size": "18px",
"height": "24px",
"maxWidth": "432px"
}