View file terms/templates/terms/js/script.html

<script type="text/javascript">
	var form = $("form#contact_us_form");
	$("form#contact_us_form").ajaxForm({
		url: '<?php echo($context['xhr_url']) ?>/contact_us',
		type: 'POST',
		dataType: 'json',
		beforeSubmit: function(arr,form){
			$(form).find('button[type="submit"]').attr('disabled','true');
			$(form).find('button[type="submit"]').text('Please wait ..');
		},
		success: function(data,stat,xhr,form){
			scroll2top();
			$.toast(data.message,{
            	duration: 5000, 
            	type: '',
            	align: 'top-right',
            	singleton: false
            });
            $(form).find('button[type="submit"]').removeAttr('disabled');
            $(form).find('button[type="submit"]').text("<?php echo lang('send'); ?>");
		}
	});
</script>