我正在尝试制作一个清单，我可以在其中单击归因于每个"task"的按钮，单击时将删除单行。

Question

就像问题所说的那样。我只需点击一个按钮就可以删除整个列表(这不是我想要的)，我只需单击一个按钮，就可以删除按钮，而不删除文本——这是我面临的最大问题。

如有任何帮助，我们将不胜感激。

//create the initial todocount variable
var toDoCount = 0;
window.onload = function() {
//user clicked on the add button in the to-do field add that text into the to-do text
$('#add-to-do').on('click', function(event) {
event.preventDefault();
//assign variable to the value entered into the textbox
var value = document.getElementById('to-do').value; 
//test value
console.log(value);

var todoitem = $("#to-dos");
todoitem.attr("item-");
//prepend values into the html and add checkmark, checkbox, and line break to make list
var linebreak = "<br/>";
var todoclose = $("<button>");
todoclose.attr("data-to-do", toDoCount);
todoclose.addClass("checkbox");
todoclose.text("☑");
//prepend values to html
$("#to-dos").prepend(linebreak);
$("#to-dos").prepend(value);
$("#to-dos").prepend(todoclose);
toDoCount++;
//to remove item from checklist
$(document.body).on("click", ".checkbox", function() {
var toDoNumber = $(this).attr("data-to-do");
$("#to-dos").remove();
});
});

下方的HTML

<div class ="col-4">
<!-- To Do List -->
<form onsubmit= "return false;">
<span id = "todo-item" type = "text">
<h4>Add your Agenda Here</h4>
<input id ="to-do" type = "text">
<input id ="add-to-do" value = "Add Item" type = "submit">
</span>
</form>
<div id="to-dos"></div>
</div>

Answer 1

这应该可以工作。

//create the initial todocount variable
var toDoCount = 0;
$(function() {
//user clicked on the add button in the to-do field add that text into the to-do text
$('#add-to-do').on('click', function(event) {
event.preventDefault();
//assign variable to the value entered into the textbox
var value = document.getElementById('to-do').value;
//test value
console.log(value);
var todoitem = $("#to-dos");
todoitem.attr("item-");
//prepend values into the html and add checkmark, checkbox, and line break to make list
var linebreak = "<br/>";
var todoclose = $("<button>");
todoclose.attr("data-to-do", toDoCount);
todoclose.addClass("checkbox");
todoclose.text("☑");
//prepend values to html
$("<div/>", {
"class": "to-do-item"
})
.append([todoclose, value, linebreak])
.appendTo($("#to-dos"));
toDoCount++;
//to remove item from checklist
$(document.body).on("click", ".to-do-item", function() {
var toDoNumber = $('.checkbox', this).attr("data-to-do");
$(this).remove();
});
});
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="col-4">
<!-- To Do List -->
<form onsubmit="return false;">
<span id="todo-item" type="text">
<h4>Add your Agenda Here</h4>
<input id ="to-do" type = "text">
<input id ="add-to-do" value = "Add Item" type = "submit">
</span>
</form>
<div id="to-dos"></div>
</div>

Answer 2

我发现根本问题与如何删除项目有关。如果是基于按钮点击，则$(this).remove()只需移除按钮。

请考虑以下代码。

$(function() {
function makeTask(todo) {
var c = $("#to-dos .todo-item").length + 1;
console.log(c, todo);
var item = $("<div>", {
class: "todo-item",
id: "todo-item-" + c
});
$("<button>", {
class: "checkbox todo-item-close",
id: "todo-item-close-" + c
}).html("☑").click(function(e) {
console.log("Remove", $(this).parent().attr("id"));
$(this).parent().remove();
}).appendTo(item);
item.append(todo);
return item;
}
$('form').submit(function(e) {
e.preventDefault();
var task = makeTask($("#to-do").val());
task.appendTo("#to-dos");
});
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="col-4">
<!-- To Do List -->
<form>
<h4>Add your Agenda Here</h4>
<input id="to-do" type="text" />
<input id="add-to-do" value="Add Item" type="submit" />
</form>
<div id="to-dos"></div>
</div>

在这里，我们添加按钮并为该按钮分配一个click事件。由于按钮在<div>中，我们需要遍历父元素，然后移除整个元素。

由于它是一个表单，并且许多用户可能会尝试使用Enter提交数据，因此我更喜欢使用.submit()回调。

希望能有所帮助。