119 lines
2.3 KiB
HTML
119 lines
2.3 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>动态列表</title>
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<style>
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* {
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margin: 0;
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padding: 0;
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}
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body {
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background-color: #000;
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color: #fff;
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}
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#app {
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width: 40%;
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margin: 20px auto;
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}
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#fruits>li {
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width: 90%;
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height: 50px;
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background-color: #6ca;
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margin: 4px 0;
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text-align: center;
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font-size: 20px;
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list-style-type: none;
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line-height: 50px;
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}
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#fruits>li>a {
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float: right;
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color: #fff;
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text-decoration: none;
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margin-right: 10px;
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}
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#fruits+div {
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margin-top: 20px;
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}
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#fname {
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width: 70%;
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height: 40px;
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color: #fff;
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border-radius: 8px;
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border: none;
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outline: none;
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font-size: 20px;
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text-align: center;
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vertical-align: middle;
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background-color: #999;
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}
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#ok {
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width: 19%;
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height: 40px;
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color: #fff;
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background-color: #a45;
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border: none;
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outline: none;
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font-size: 16px;
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vertical-align: middle;
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}
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</style>
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</head>
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<body>
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<div id="app">
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<ul id="fruits">
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<li>苹果<a href="">×</a></li>
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<li>香蕉<a href="">×</a></li>
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<li>榴莲<a href="">×</a></li>
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<li>火龙果<a href="">×</a></li>
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</ul>
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<div>
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<input type="text" id="fname">
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<button id="ok">确定</button>
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</div>
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</div>
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<script>
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const ul = document.querySelector('#fruits')
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const fnameInput = document.querySelector('#fname')
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const okBtn = document.querySelector('#ok')
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const anchors = document.querySelectorAll('#fruits a')
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function removeItem(evt) {
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evt.preventDefault()
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let li = evt.target.parentNode
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li.parentNode.removeChild(li)
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}
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function addItem(evt) {
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let fname = fnameInput.value.trim()
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if (fname.length > 0) {
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let li = document.createElement('li')
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li.textContent = fname
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let a = document.createElement('a')
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a.setAttribute('href', '')
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a.textContent = '×'
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a.addEventListener('click', removeItem)
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li.appendChild(a)
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ul.insertBefore(li, ul.firstElementChild)
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}
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fnameInput.value = ''
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fnameInput.focus()
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}
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window.addEventListener('load', (evt) => {
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for (let i = 0; i < anchors.length; i += 1) {
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anchors[i].addEventListener('click', removeItem)
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}
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fnameInput.addEventListener('keydown', (evt) => {
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let code = evt.keyCode || evt.which
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if (code == 13) {
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addItem()
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}
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})
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okBtn.addEventListener('click', addItem)
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})
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</script>
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</body>
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</html>
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