我有一个看起来像这样的日历,其样式使用 Tailwind CSS:
8 Wednesday 当前已被点击,因此它具有粉红色的背景和粉红色的阴影。第 7 个是之前单击的元素,这就是为什么它只有粉红色阴影(我删除了粉红色背景类,但保留了粉红色阴影)。
我想要的是保留最新的先前单击的元素,以便我可以添加粉红色阴影,但仅限于最新的元素,而不是所有先前单击的元素。
这就是我的 JavaScript 代码的样子:
//select needed elements from HTML const calendarDates = document.querySelectorAll('.clickable') const dateDisplay = document.getElementById('show-details'); const selectedDateDayElement = document.getElementById('selected-date-day'); const selectedDateElement = document.getElementById('selected-date'); let latestClicked = null; let latestPreviouslyClicked = null; // if there is no date, dont add hover efects for (let i = 0; i < calendarDates.length; i++) { if (calendarDates[i].textContent.trim() === '') { calendarDates[i].classList.remove('hover:bg-pink-500', 'hover:shadow-md', 'hover:cursor-pointer', 'hover:shadow-pink-500'); calendarDates[i].classList.add('empty') } } // select only elements that are not empty const clickableDates = document.querySelectorAll('.clickable:not(.empty)'); clickableDates.forEach(dateElement => { dateElement.addEventListener('click', () => { const dateValue = dateElement.textContent.trim(); const year = 2017; const month = 1; if (latestClicked !== null) { latestPreviouslyClicked = latestClicked; latestClicked = null; latestPreviouslyClicked.classList.remove('bg-pink-500'); } dateElement.classList.add('bg-pink-500', 'shadow-md', 'shadow-pink-500'); latestClicked = dateElement; const selectedDate = new Date(year, month, parseInt(dateValue)); const daysOfWeek = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']; const dayOfWeek = daysOfWeek[selectedDate.getDay()]; selectedDateDayElement.textContent = dayOfWeek; selectedDateElement.textContent = dateValue; dateDisplay.style.display = 'block'; }); }); // Close the date details when clicked outside, and this works at it should document.addEventListener('click', event => { if (!event.target.classList.contains('clickable')) { clickableDates.forEach(element => { element.classList.remove('bg-pink-500'); }); dateDisplay.style.display = 'none'; } });
我面临的问题是它保留了所有先前单击的元素的阴影:
预期行为是:
好吧,我也误读了你的问题。
问题出在部分
您实际上只是从
latestClicked
元素中删除背景,而从未删除阴影样式。这应该有效:
重要的部分是在将元素重新分配给下一个元素之前改变该元素。
或者,如果可选链接在您的环境中工作(捆绑程序或仅支持新浏览器):