对于.dataset或data-属性，这似乎是一个完美的用例. MDN 上有一个很棒的页面，显示了如何使用此功能.基本上，将uid以<data-uid = "ach782bckhbc23whatever">的形式存储在HTML中的<tr>或<button>元素上，然后单击，使用evt.target.dataset.uid或evt.target.parentElement.dataset.uid获取该行的uid，以进行.get() firebase调用. /p>

This appears to be a perfect use case for the .dataset or data- attribute. MDN has a great page showing how to use this. Basically, store the uid as <data-uid = "ach782bckhbc23whatever"> in your HTML on the <tr> or the <button> element an on click, use evt.target.dataset.uid or evt.target.parentElement.dataset.uid to get the row's uid to make your .get() firebase call.

<div id="user" data-id="1234567890" data-user="johndoe" data-date-of-birth>John Doe</div>

let el = document.querySelector('#user');

// el.id == 'user'
// el.dataset.id === '1234567890'
// el.dataset.user === 'johndoe'
// el.dataset.dateOfBirth === ''

el.dataset.dateOfBirth = '1960-10-03'; // set the DOB.

// 'someDataAttr' in el.dataset === false
el.dataset.someDataAttr = 'mydata';
// 'someDataAttr' in el.dataset === true