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.elementor-element.elementor-element-b2112ba{width:100%}}document.addEventListener('DOMContentLoaded',function (){const zomer=document.querySelector('#zomerbanden');const winter=document.querySelector('#winterbanden');const vierseizoenen=document.querySelector('#vierseizoenenbanden');const kwaliteitsSelect=document.querySelector('#kwaliteitsklasse');const alleOpties=Array.from(kwaliteitsSelect.options);// sla originele opties op function filterOpties(){const geselecteerdeSoorten=[];if (zomer && zomer.checked) geselecteerdeSoorten.push('Zomerbanden');if (winter && winter.checked) geselecteerdeSoorten.push('Winterbanden');if (vierseizoenen && vierseizoenen.checked) geselecteerdeSoorten.push('Vierseizoenen');// Filter opties op basis van de geselecteerde bandensoorten kwaliteitsSelect.innerHTML='';// reset dropdown const gefilterdeOpties=alleOpties.filter(opt=>{return geselecteerdeSoorten.some(soort=>opt.text.startsWith(soort)););if (gefilterdeOpties.length>0){gefilterdeOpties.forEach(opt=>kwaliteitsSelect.appendChild(opt))}else{const placeholder=document.createElement('option');placeholder.text='Selecteer eerst een bandensoort';kwaliteitsSelect.appendChild(placeholder)}}[zomer,winter,vierseizoenen].forEach(checkbox=>{if (checkbox) checkbox.addEventListener('change',filterOpties)});filterOpties();// startwaarde filteren});