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//initial setup document.addEventListener('DOMContentLoaded', function(){ addListeners(); setRating(); //based on value inside the div }); function addListeners(){ var stars = document.querySelectorAll('.star'); [].forEach.call(stars, function(star, index){ star.addEventListener('click', (function(idx){ console.log('adding rating on', index); document.querySelector('.stars').setAttribute('data-rating', idx + 1); console.log('Rating is now', idx+1); setRating(); }).bind(window,index) ); }); } function setRating(){ var stars = document.querySelectorAll('.star'); var rating = parseInt( document.querySelector('.stars').getAttribute('data-rating') ); [].forEach.call(stars, function(star, index){ if(rating > index){ star.classList.add('rated'); console.log('added rated on', index ); }else{ star.classList.remove('rated'); console.log('removed rated on', index ); } }); }

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