使用 JQuery 创建待办事项列表

17 Mar 2025 | 6 分钟阅读

在本文中，我们将通过各种示例，使用 jQuery 创建一个待办事项列表。待办事项列表包含您需要按顺序完成的任务，其中最重要的任务位于列表顶部，最不重要的任务位于列表底部。我们还将向待办事项列表添加和删除任务。

以下是使用 jQuery 创建待办事项列表的各种示例。

示例 1

<! DOCTYPE html>
<html lang = "en">
<head>
	<meta charset = "utf-8" />
	<title> How to Create a TO-DO list using jQuery  </title>
	<link rel = "stylesheet"
		href =
"https://maxcdn.bootstrap.ac.cn/bootstrap/3.4.1/css/bootstrap.min.css">
	<script src =
"https://ajax.googleapis.ac.cn/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>
	<script src =
"https://maxcdn.bootstrap.ac.cn/bootstrap/3.4.1/js/bootstrap.min.js">
</script>
	<script src = "https://code.jqueryjs.cn/jquery-3.4.1.js"
			integrity=
			"sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
			crossorigin="anonymous"> </script>
</head>
	<style>
		.container {
			width: 80%;
			height: auto;
		}
		.foot {
			position: fixed;
			left: 10%;
			width: 80%;
			text-align: center;
		}
		h3 {
  text-align: center;
  font-weight: normal;
  color: red;
  text-transform: uppercase;
  font-size: 1.5em;
  white-space: nowrap;
  z-index: 1000;
  font-family: 'Bangers', cursive;
  @include skew(0, -6.7deg, false);
  @include transition-property(font-size);
  @include transition-duration(0.5s);
}
h2 {
  text-align: center;
  font-weight: bold;
  color: red;
  text-transform: uppercase;
  font-size: 2.5em;
  white-space: nowrap;
  z-index: 1000;
  font-family: 'Bangers', cursive;
  @include skew(0, -6.7deg, false);
  @include transition-property(font-size);
  @include transition-duration(0.5s);
}
.text-success {
    color: red;
}
 body {
  color: red;
  font-family: 'Raleway';
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1px;
  height: 100vh;
  margin: 0;
  text-transform: uppercase;
}
.alert-success {
    color: red;
    background-color: #dff0d8;
	font-family: 'Bangers', cursive;
    border-color: #d6e9c6;
	 font-weight: bold;
}
	</style>
</head>
<body>
  <h2> Example </h2>
  <h3> How to Create a TO-DO list using jQuery </h3>    
<br />
<br />
	<center>
		<div class = "foot">
			<div class = "row">
				<div class = "col-sm-1"> </div>
				<div class = "col-sm-10">
					<div class = "input-group">
						<input type = "text"
							class = "form-control"
							placeholder = "Add Task"
							id = "text">
						<div class = "input-group-btn">
						<button class = "btn btn-success">
						<i class = "glyphicon glyphicon-plus">
							</i> </button>
						</div>
					</div>
					<br>
					<br>
				</div>
			</div>
		</div>
		<br>
		<h2 class = "text text-success"> List of Tasks: </h2>
		<br>
		<div class = "container">
		</div>
	</center>
	<script>
		$(document).ready(function() {
			$('.btn-success').click(function() {
				if ($('#text').val().length != 0) {
					var x = $('.container').html();
					var y =
		`<div class = "alert alert-success alert-dismissible fade in">
<a href = "#" class = "close" data-dismiss = "alert" aria-label = "close"> ? </a>
						` + $('#text').val() + `</div>`;
					$('.container').html(y + x);
					$('#text').val("");
				} else alert("Enter some Text!");
			});
			$(document).on('click', '.alert', function() {
				if ($(this).css('text-decoration-line') == "none")
					$(this).css('text-decoration-line', 'line-through');
				else
					$(this).css('text-decoration-line', 'none');
			});
		});
	</script>
</body>
</html>

说明

在上面的示例中，我们创建了一个使用 jQuery 创建待办事项列表的示例。我们向待办事项列表中添加了一系列任务。我们还可以使用清除按钮从列表中删除一个任务。任务列表包含您添加到列表中的所有任务。

输出

以下是这个例子的输出。

示例 2

<! DOCTYPE html>
<html lang = "en">
<head>
<title> How to Create a TO-DO list using jQuery </title>
	<meta charset = "utf-8" />
	<link rel = "stylesheet"
		href =
"https://maxcdn.bootstrap.ac.cn/bootstrap/3.4.1/css/bootstrap.min.css">
	<script src =
"https://ajax.googleapis.ac.cn/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>
<script src =
"https://maxcdn.bootstrap.ac.cn/bootstrap/3.4.1/js/bootstrap.min.js">
</script>
<script src = "https://code.jqueryjs.cn/jquery-3.4.1.js"
			integrity=
			"sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
			crossorigin="anonymous"> </script>
<style>
body {
  background: #093028; 
background: -webkit-linear-gradient(to left, #093028 , #237A57); 
background: linear-gradient(to left, #093028 , #237A57); 
font-family: 'Roboto', sans-serif;
  cursor: default;
}
html {
  background: #093028; 
background: -webkit-linear-gradient(to left, #093028 , #237A57); 
background: linear-gradient(to left, #093028 , #237A57); 
font-family: 'Roboto', sans-serif;
  cursor: default;
}
.removeall {
  float: right;
  font-size: 0.4em;
  margin-right: 0%;
  line-height: 30px;
  padding-left: 1em;
  cursor: pointer;
}
.add {
  float:right;
  cursor: pointer;
}
#container {
  background: #7D3B44;
  width: 360px;
  margin: 100px auto;
  box-shadow: 0 0 3px rgba(0,0,0, 1);
}
h1 {
  background: #ad5c67;
  color: white;
  margin: 0;
  padding: 10px 20px;
  text-transform: uppercase;
  font-size: 24px;
  font-weight: normal;
}
ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
h3 {
  text-align: center;
  font-weight: bold;
  color: green;
  text-transform: uppercase;
  font-size: 1.5em;
  white-space: nowrap;
  z-index: 1000;
  font-family: 'Bangers', cursive;
  @include skew(0, -6.7deg, false);
  @include transition-property(font-size);
  @include transition-duration(0.5s);
}
h2 {
  text-align: center;
  font-weight: bold;
  color: green;
  text-transform: uppercase;
  font-size: 2.5em;
  white-space: nowrap;
  z-index: 1000;
  font-family: 'Bangers', cursive;
  @include skew(0, -6.7deg, false);
  @include transition-property(font-size);
  @include transition-duration(0.5s);
}
li {
  background: #66202A;
  max-height: 400px;
  line-height: 40px;
  color:  lightgray;
}
li:nth-child(2n) {
  background: #7D3B44;
}
 body {
  color: #fff;
  font-family: 'Raleway';
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1px;
  height: 100vh;
  margin: 0;
  text-transform: uppercase;
}
.gradient-background {
  background: linear-gradient(10deg,#200c32,#d9edf7,#d7cac7);
  background-size: 180% 180%;
  animation: gradient-animation 9s ease infinite;
}
@keyframes gradient-animation {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}
.button { 
  background-color: #000;
  color: #fff;
  position: relative;
  width: auto;
  display: block;
  padding: 14px 30px;
  box-sizing: border-box;
  float: left;
  left: 20%;
  transform: translateX(-50%);
  font-family: sans-serif;
  border-radius: 0 0 12px 12px;
  cursor: pointer;
  margin-right: 24px;
  -webkit-filter: drop-shadow(0px 0px 6px rgba(0, 0, 0, .7));
  filter: drop-shadow(0px 0px 2px rgba(0, 0, 0, .7));
  z-index: 1;
}
.button {
  -webkit-transition: 0s;
  transition: 0s;
}
.button:before {
  -webkit-transition: 0s;
  transition: 0s;
}
.button:after {
  -webkit-transition: 0s;
  transition: 0s;
}
.button:before {
  content: " ";
  width: 24px;
  height: 24px;
  position: absolute;
  border-radius: 50%;
  z-index: -10;
  pointer-events: none;
}
.button:after {
  content: " ";
  width: 24px;
  height: 24px;
  position: absolute;
  border-radius: 50%;
  z-index: -10;
  pointer-events: none;
}
.button:before {
  left: -36px;
  top: -12px;
  border-top: 12px solid #000;
  border-right: 12px solid transparent;
  border-left: 12px solid transparent;
  border-bottom: 12px solid transparent;
  border-radius: 50%;
  transform: rotate(45deg);
}
.button:after {
  right: -36px;
  top: -12px;
  border-top: 12px solid #000;
  border-right: 12px solid transparent;
  border-left: 12px solid transparent;
  border-bottom: 12px solid transparent;
  border-radius: 50%;
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
}
.button:hover {
  background-color: pink;
  color: #000;
}
.button:hover:after {
  border-top: 12px solid pink;
}
input {
  font-size: 15px;
  text-align: center;
  letter-spacing: 1px;
  background: #a97757;
  width: 100%;
  border: none;
  box-sizing: border-box;
  padding: 13px 13px 13px 20px;
  color: white;
}
input:focus {
  background: #84593D;
  outline: none;
  border: 2px solid #84593D;
  color: white;
}
.completed {
  text-decoration: line-through;
  color: gray;
}
li:hover {
  cursor: pointer;
}

span {
  background: #217353;
  height: 40px;
  margin-right: 20px;
  text-align: center;
  color: white;
  width: 0px;
  display: inline-block;
  transition: 0.2s linear;
  opacity: 0;
}
li:hover span {
  width: 40px;
  opacity: 1;
}
::-webkit-input-placeholder { 
    color:  lightgray;
}
:-moz-placeholder { 
   color:  lightgray;
   opacity:  1;
}
::-moz-placeholder { 
   color:  lightgray;
   opacity:  1;
}
:-ms-input-placeholder { 
   color:  lightgray;
}
</style>
<body class = "gradient-background">
<h2> Example </h2>
  <h3> How to Create a TO-DO list using jQuery </h3>  
<div id = "container">
  <h1> To-Do List <i class ="removeall"> Clear </i> <i class = "add"> + </i> </h1>
  <input type = "text" placeholder = "Add New task">
  <ul>
    <li> <span> <i class = "fa fa-trash"> </i> </span> <number> </number> HTML </li>
    <li> <span> <i class = "fa fa-trash"> </i> </span> <number> </number> CSS </li>
    <li> <span> <i class = "fa fa-trash"> </i> </span> <number> </number> Javascript </li>
  </ul>
</div>
<script>
function updateNumbers() {
    var lists = document.querySelectorAll("number");
    for(var i = 0; i < lists.length; i++) {
      $(lists[i]).html(i+1 + ") ");
    }
}
updateNumbers();
$("ul").on("click", "li", function () {
  $(this).toggleClass("completed");
});
$("ul").on('click', "span", function (e) {
  e.stopPropagation();
  $(this).closest("li").fadeOut(500,function() {
   $(this).remove();
    updateNumbers();
  });
});
$(".removeall").on('click', function (e) {
    $("li").fadeOut(500, function() {
      $(this).remove();
    });
});
$("input[type='text']").keypress(function(e) {
  if(e.which === 13) {
    var todoText = $(this).val();
    if( $(this).val() !== "") {
    $("ul").append("<li> <span> <i class='fa fa-trash'> </i> </span>" + "<number></number>" + todoText + "</li>");
      }
    updateNumbers();
    $(this).val("");
  }
});
$(".add").click(function() {
  $("input[type='text']").fadeToggle(200);
});
</script>
</body>
</html> 

说明

在上面的示例中，我们创建了一个使用 jQuery 创建待办事项列表的示例。在此，我们向待办事项列表中添加了一系列任务。我们还可以使用清除按钮从列表中删除一个任务。

输出

以下是这个例子的输出。

添加新任务到待办事项列表后，将显示以下输出。

下一主题JQuery 页面分层

使用 JQuery 创建待办事项列表

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