第10次修改了可删除可持久保存的前端html备忘录
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<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>与妖为邻的备忘录</title><style>* {/* 外边距: 上右下左 */margin: 0px 0px 0px 0px;/* 内边距: 上右下左 */padding: 0 0 0 0;/* 文本颜色 */color: #fff;}body { background: #cfd1e1;/* 文本缩进 */text-indent: 5em;/* background: linear-gradient(0.25turn, #f7d6d6, #cacf80ac, #b7efea82); *//* background-image: url("file:///D:/%E5%9B%BE%E7%89%87/yyds.jpg");background-repeat: no-repeat;background-attachment: fixed;background-size: 100% 100%; */}/* ********************背景颜色区**************************************** *//* 3D立体文本的样式 */dfn {text-shadow: 0px 1px 0px #999,0px 2px 0px #888,0px 3px 0px #777,0px 4px 0px #666,0px 5px 0px #555,0px 6px 0px #444,0px 7px 0px #333,0px 8px 7px #001135}/* 3D背景的样式 */.down-div,.finish,input,sub,button {background-image: linear-gradient(to top left,rgba(0, 0, 0, 0.2),rgba(0, 0, 0, 0.2) 30%,rgba(0, 0, 0, 0));box-shadow:inset 2px 2px 3px rgba(255, 255, 255, 0.6),inset -2px -2px 3px rgba(0, 0, 0, 0.6);text-shadow: 1px 1px 1px #100000;border: 0;line-height: 30px;padding: 0 10px;border-radius: 10px;}/* 按钮凹进去的样式 */button:active,input:active {box-shadow:inset -2px -2px 3px rgba(255, 255, 255, 0.6),inset 2px 2px 3px rgba(0, 0, 0, 0.6);}/* 背景颜色 */.up-button,sub,.updiv {background-color: #59f43aec;}button {background-color: #f4770a;}input {background-color: #f6d607;}input:hover,button:hover,.up-button3 {background-color: #ff0000fb;}.down-div {background-color: rgba(51, 154, 25, 0.502);}/* 鼠标变小手 */input,button {cursor: pointer;}/* ***********************h1-div区************************************* */.h-div {h1,p {display: inline;color: #000000;}}/* **********************up-div区************************************** */.up-div {/* 圆角 */border-radius: 10px;.up-button+input {width: 150px;};textarea {/* 文本对齐 居中*/text-align: center;/* 字体大小 */color: rgb(0, 0, 0);&::placeholder {color: rgb(248, 0, 0);/* 文本间隔 */}}}/* ***********************down-div************************************* *//* -设置checkbox样式----*/input[type="checkbox"] {-webkit-appearance: none;appearance: none;width: 25px;height: 25px;position: relative;margin-right: 10px;border-radius: 50%;}input[type="checkbox"]::after {content: "";width: 100%;height: 100%;border: 2px solid #f10505;position: absolute;left: -3px;top: -3px;border-radius: 50%;}/* 设置checkbox点击之后的样式*/input[type="checkbox"]:checked::after {height: 15px;width: 25px;border-top: none;border-right: none;border-radius: 0;transform: rotate(-45deg);transition: all 0.5s ease-in-out;}/* 选中文本样式 */.finish {/* text-decoration: line-through; */background: #000000;}</style>
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<body><div class="h-div"><h1>备忘录<dfn>(memorandum)</dfn></h1><p><sub><a href="输入网站地址" target="_blank">输入网站名称</a></sub></p></div><div class="up-div"><textarea class="up-textarea" name="uptextarea" rows="2" cols="30%"placeholder="请选择txt、js、css或html文件，文件内容会被自动读取"></textarea><button type="text" class="up-button">添加</button><input type="file" name="inputfile" accept="text/plain, text/css, text/html, text/javascript, text/markdown"class="background3D" /><button><a href="https://www.baidu.com/s" target="_blank">百度一下</a></button><button id="openButton">打开URL</button><button id="up-button1" class="up-button3">对选择的进行删除</button></div></div><hr><div class="down-div"></div><script>var uptext = document.querySelector(".up-textarea");var addto = document.querySelector(".up-button");var text = document.querySelector(".down-div");/*************添加事件*****************/addto.onclick = function () {inserhtml(uptext.value, '');// 添加后清空输入框uptext.value = '';// 焦点放回输入框uptext.focus();savetodo();}/*************savetodo函数****************/var savetodo = function () {let todoarr = [];let todojs = {};var econtent = document.querySelectorAll('.content');for (let index = 0; index < econtent.length; index++) {todojs.name = econtent[index].innerHTML;todojs.finish = econtent[index].classList.contains('finish');todoarr.push(todojs);todojs = {};}save(todoarr);}var loadtodo = function () {let todoarr = load();for (let index = 0; index < todoarr.length; index++) {inserhtml(todoarr[index].name, todoarr[index].finish ? 'finish' : '');}}/**********************本地持久储存（localStorage）函数*****************************/var save = function (arr) {/**JSON.stringify(arr) 先将数组转换为字符串 *localStorage.todos 然后将字符串保存到本地的todos中*/localStorage.todos = JSON.stringify(arr);}/***读取函数，把todos转成数组*然后返回数组*/var load = function (arr) {var arr = JSON.parse(localStorage.todos);return arr;}/**********************按钮点击事件*****************************/text.onclick = function () {var tg = event.target;// 获取父元素下的所有子元素var tgkids = tg.parentElement.children;/*******************************对复选框的点击事件******************************/if (tgkids[0].checked) {tgkids[1].classList.add("finish");}else {tgkids[1].classList.remove("finish");}// 保存更改的样式savetodo();/*******************************对选择的进行删除********************************************/var Select = document.getElementById("up-button1");Select.onclick = function () {if (confirm("是否删除所选？")) {var check = document.getElementsByName("checkbox");for (var i = 0; i < check.length; i++) {if (check[i].checked) {check[i].parentElement.remove();i--;// 删除后保存savetodo();}}}}}var inserhtml = function (val, cls) {text.insertAdjacentHTML("beforeend",`<div><input type="checkbox" name='checkbox'> <span class='content ${cls}'>${val}</span> </div>`)}loadtodo();/*****************************提示弹窗无需点击的函数**********************************************/function displayAlert(type, data, time) {var a = document.createElement("div");if (type == "success") {a.style.width = "200px";a.style.backgroundColor = "#009900";} else if (type == "error") {a.style.width = "280px";a.style.backgroundColor = "#990000";} else if (type == "info") {a.style.backgroundColor = " #e6b800";a.style.width = "600px";} else {return;}a.id = "lunbo";a.style.textAlign = "center";a.style.position = "absolute";a.style.height = "60px";a.style.marginLeft = "-100px";a.style.marginTop = "-30px";a.style.left = "30%";a.style.top = "5%";a.style.color = "white";a.style.fontSize = "25px";a.style.borderRadius = "20px";a.style.textAlign = "center";a.style.lineHeight = "60px";if (document.getElementById("") == null) {document.body.appendChild(a);a.innerHTML = data;setTimeout(function () {document.body.removeChild(a);}, time);}}/**************************打开URL按钮的JavaScript******************************************/// 获取打开URL按钮元素var openBtn = document.getElementById("openButton");// 添加点击事件处理程序openBtn.addEventListener('click', function () {// 获取文件路径// 这里假设您已经有一个函数来获取文件路径，例如 prompt('请输入文件路径', 'D:/前端学习', '_blank');var filePath = prompt("请输入网站地址或者本地文件路径", "D:/前端学习");if (filePath) {// 使用window.location对象的assign()方法导航到指定文件// window.location.assign(filePath);// 或者使用window.open()方法打开新窗口导航到指定文件window.open(filePath);} else {displayAlert('info', '未提供有效的文件路径！', 1500);// alert("未提供有效的文件路径！");}});/**************************本地文件读取的函数******************************************/window.onload = function () {var text = document.getElementsByName('uptextarea')[0],inputFile = document.getElementsByName('inputfile')[0];//上传文件inputFile.onchange = function () {console.log(this.files);var reader = new FileReader();reader.readAsText(this.files[0], 'UTF-8');reader.onload = function (e) {// urlData就是对应的文件内容var urlData = this.result;text.value = urlData;};};};</script>
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