单击删除按钮时如何删除该行?
How to i remove the row when i click delete button?
const Form = document.querySelector(".tracker-form"),
Name = document.querySelector(".tracker-name"),
Date = document.querySelector(".tracker-date"),
Amount = document.querySelector(".tracker-amount"),
Table = document.querySelector(".tracker-table"),
tableRow = document.createElement("tr");
function deleteRow(event) {
const button = event.target;
const row = button.parentNode;
tableRow.removeChild(row);
}
function addExpense() {
Form.addEventListener("submit", event => {
const tableName = document.createElement("td");
const tableDate = document.createElement("td");
const tableAmount = document.createElement("td");
const delButton = document.createElement("button");
delButton.innerHTML = "X";
delButton.addEventListener("click", deleteRow);
Table.appendChild(tableRow);
tableRow.appendChild(tableName);
tableRow.appendChild(tableDate);
tableRow.appendChild(tableAmount);
tableRow.appendChild(delButton);
tableName.innerHTML = Name.value;
tableDate.innerHTML = Date.value;
tableAmount.innerHTML = Amount.value;
Name.value = "";
Date.value = "";
Amount.value = "";
event.preventDefault();
})
}
function init() {
addExpense();
}
init();
我正在制作费用跟踪器。当我在名称、日期、金额、值中输入一个值时,每个 table 上都会显示 'x' 按钮。我想在单击 'x' 按钮时删除一行。但它不起作用。谁能告诉我为什么?
您可以简单地删除最近的 tr 元素:
function deleteRow(event) {
event.target.closest('tr').remove();
}
你需要区分parentNode
.
parentNode: The parentNode property returns the parent node of the specified node, as a Node object.
The closest() method searches up the DOM tree for the closest element which matches a specified CSS selector
$(".deleteRowButton").on("click", function(event){
var $closest = event.target.closest('tr');
var $parentNode = event.target.parentNode; // It just return `td` instead.
console.log({closest: $closest, parentNode: $parentNode});
$closest.remove();
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr><td>foo</td>
<td><a class="deleteRowButton">delete_row</a></td></tr>
<tr><td>bar bar</td>
<td><a class="deleteRowButton">delete_row</a></td></tr>
<tr><td>bazmati</td>
<td><a class="deleteRowButton">delete_row</a></td></tr>
</table>
可视化输出如下: