基于锚展开手风琴

Question

是否有一种方法来扩展基于URL锚的引导手风琴?

例如，如果我用以下URL加载页面:/mypage#headingOne我正在使用PHP，但我知道#之后的URL部分都没有通过服务器传递。也许这可以通过JS来完成?…

<div class="accordion" id="accordionExample">
<div class="accordion-item">
<h2 class="accordion-header" id="headingOne">
<button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
Accordion Item #1
</button>
</h2>
<div id="collapseOne" class="accordion-collapse collapse show" aria-labelledby="headingOne" data-bs-parent="#accordionExample">
<div class="accordion-body">
<strong>This is the first item's accordion body.</strong> It is shown by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
</div>
</div>
</div>
<div class="accordion-item">
<h2 class="accordion-header" id="headingTwo">
<button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
Accordion Item #2
</button>
</h2>
<div id="collapseTwo" class="accordion-collapse collapse" aria-labelledby="headingTwo" data-bs-parent="#accordionExample">
<div class="accordion-body">
<strong>This is the second item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
</div>
</div>
</div>
</div>

Answer 1

这是一个不使用jQuery的纯js实现的实时演示。你可以把下面的代码放在HTML正文的底部。

(function() {
// change location hash when toggle a accordion item.
document.querySelectorAll('.accordion-button').forEach(function(btn) {
btn.addEventListener('click', function() {
window.location.hash = '#' + this.parentNode.id;
});
});
if (!window.location.hash) return;
// show accordion item based on location hash.
let act = document.querySelector(window.location.hash)
if (act) {
let btn = act.querySelector('.accordion-button');
if (btn && !btn.parentNode.parentNode.querySelector('.collapse.show')) {
btn.click();
}
}
})();