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| <!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
* {
margin: 0;
padding: 0;
}
#container {
margin: 20px 50px;
}
#fruits li {
list-style: none;
width: 200px;
height: 50px;
font-size: 20px;
line-height: 50px;
background-color: cadetblue;
color: white;
text-align: center;
margin: 2px 0;
}
#fruits>li>a {
float: right;
text-decoration: none;
color: white;
position: relative;
right: 5px;
}
#fruits~input {
border: none;
outline: none;
font-size: 18px;
}
#fruits~input[type=text] {
border-bottom: 1px solid darkgray;
width: 200px;
height: 50px;
text-align: center;
}
#fruits~input[type=button] {
width: 80px;
height: 30px;
background-color: coral;
color: white;
vertical-align: bottom;
cursor: pointer;
}
</style>
</head>
<body>
<!-- <a href="mailto:957658@qq.com">联系站长</a> -->
<div id="container">
<ul id="fruits">
<!-- a标签有默认的跳转页面的行为有两种方法可以阻止它的默认行为-->
<li>苹果<a href="">×</a></li>
<li>香蕉<a href="">×</a></li>
<li>火龙果<a href="">×</a></li>
<li>西瓜<a href="">×</a></li>
</ul>
<input type="text" name="fruit">
<input id="ok" type="button" value="确定">
</div>
<script src="js/mylib.js"></script>
<script>
function removeItem(evt) {
evt.preventDefault();
var a = evt.target || evt.srcElement;
var li = a.parentNode;
li.parentNode.removeChild(li);
}
function addItem() {
var fruitName = input.value.trim();
if (fruitName.length > 0) {
var li = document.createElement('li');
li.textContent = fruitName;
li.style.backgroundColor = randomColor();
var a = document.createElement('a');
a.href = '';
a.textContent = '×';
a.addEventListener('click', removeItem);
li.appendChild(a);
ul.insertBefore(li, ul.firstChild);
}
input.value = '';
input.focus();
}
var anchors = document.querySelectorAll('#fruits a');
for (var i = 0; i < anchors.length; i += 1) {
anchors[i].addEventListener('click', removeItem);
}
var ul = document.getElementById('fruits');
var input = document.querySelector('#container input[type=text]');
input.addEventListener('keypress', function(evt) {
var key = evt.keyCode || evt.which;
if (key == 13) {
addItem();
}
});
var okButton = document.querySelector('#ok');
okButton.addEventListener('click', addItem);
</script>
</body>
</html>
|