gistfile1.js

var customFilterData = {};

$('#data-table')
        .on('preXhr.dt', function ( e, settings, d )
        {

            d.page = Math.ceil(d.start / d.length) + 1;
            if ( d.page <= 1 ) d.page = 1;
            
            for (var i in customFilterData)
            {
                d[i] = customFilterData[i];
            }
        }
)

$('.example-filter-button').on('click', function(e){
    // Serialize fields
    // Set them to customFilterData
    // Trigger data tables filter request
})