function resetAllFilters() chapterFilter.value = 'all'; difficultyFilter.value = 'all'; searchInput.value = ''; currentFilters = chapter: 'all', difficulty: 'all', search: '' ; renderProblems();
let currentFilters = chapter: 'all', difficulty: 'all', search: '' ; organic chemistry ms chouhan
.diff-easy background: #dcfce7; color: #15803d; .diff-medium background: #fff3e3; color: #b45309; .diff-advanced background: #ffe4e2; color: #b91c1c; function resetAllFilters() chapterFilter