Datepicker problem

Hello,

I need your help. When i choose a date, i would like to disable the previous ones. How can i make this happen?

I often use this code for contact form 7 and datepicker for contact form 7:

/* code */
function calendar_js(){
?>
<script>
jQuery(function($){
var start = $(‘.date-417 input’).first();
var end = $(‘.date-419 input’).first();

start.on(‘change’, function() {
var start_date = $(this).datepicker(‘getDate’);
start_date.setDate(start_date.getDate() + 1);
end.datepicker(‘option’, ‘minDate’, start_date);
});
});
</script>
<?php
}
add_action(‘wp_footer’, ‘calendar_js’);

Thank you in advance.

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