javascript - onclick 上和下箭头

Question

我已经为按钮创建了 HTML 和 css，我需要根据点击进行向上和向下箭头切换。我对 HTML 和 CSS 很满意，但不太擅长使用 jQuery。有人可以让我开始做这个吗？单击 .js-custom-sleeve-option 箭头应向上/向下更改。

.js-custom-sleeve-option {
    width: auto;
    min-width: 3.8rem;
    height: 3rem;
    display: inline-block;
    border: 1px solid #d1cac5;
    background: #f7f7f7;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.js-arrow-down {
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 6px solid #233354;
    position: relative;
    left: 7px;
}

.js-arrow-up {
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-bottom: 6px solid #233354;
    position: relative;
    left: 6px;
    bottom: 12px;
}

<div>
			<a class="js-custom-sleeve-option">
				<span class="js-arrow-down"></span>
			</a>
</div>

Answer 1

这将是这样的..当然你必须根据你的需要修改它

$(function(){
$(".js-custom-sleeve-option").on('click' , function(){
  this.find('span').removeClass('js-arrow-down').end().addClass('js-arrow-up');
});
});