将事件侦听器添加到模板文本中的按钮

Question

我将这个模板文本插入到一个带有forEach循环的表中。如何在每次迭代中将事件侦听器附加到按钮？

这只是将事件侦听器附加到表中的第一个按钮：

function renderMenu(doc) {
const table = `
<tr data-id=${doc.id}>
<td>${doc.data().number}</td>
<td>${doc.data().name}</td>
<td>${doc.data().ingredients}</td>
<td>${doc.data().price}</td>
<td>${doc.data().category}</td>
<td><button class="btn-remove">Delete</button></td>
</tr>`
menu.insertAdjacentHTML('beforeend', table)
let removeBtn = document.querySelector('.btn-remove')
//Delete items
removeBtn.addEventListener('click', (e) => {
e.preventDefault()
...
})
}

Answer 1

您可以为按钮添加一个data-属性：

`... <button data-remove-button-id="${doc.id}"> ...`

并以为目标

document.querySelector(`[data-remove-button-id="${doc.id}"]`);

演示(我随意重命名了一些东西(：

const table = document.querySelector('[data-my-table]');
function addDoc(doc) {
const row = `
<tr data-id=${doc.id}>
<td>${doc.number}</td>
<td>${doc.name}</td>
<td>${doc.ingredients}</td>
<td>${doc.price}</td>
<td>${doc.category}</td>
<td><button data-remove-button-id="${doc.id}" class="btn-remove">Delete</button></td>
</tr>`;
table.insertAdjacentHTML('beforeend', row);
const removeBtn = document.querySelector(`[data-remove-button-id="${doc.id}"]`);
removeBtn.addEventListener('click', e => {
console.log(`deleted row ${e.target.dataset.removeButtonId}`);
});
}
addDoc({id: 1, number: 1, name: 'foo', ingredients: 'salt', price: 8.5, category: 'food'});
addDoc({id: 2, number: 2, name: 'foo', ingredients: 'salt', price: 8.5, category: 'food'});
addDoc({id: 3, number: 3, name: 'foo', ingredients: 'salt', price: 8.5, category: 'food'});

<table data-my-table></table>