• vue简单案例----小张记事本

    小张记事本

    具体效果如图所示，这里就简单展示，还有很多不足的地方，希望大家可以对这个小项目进行改进，话不多说可以参考下面的代码
    在这里插入图片描述

    源代码如下

    <html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>记事本title>
  <STYLE type="text/css">
    html,
    body {
      margin: 0;
      padding: 0;
    }
    body {
      background: #fff;
    }
    button {
      margin: 0;
      padding: 0;
      border: 0;
      background: none;
      font-size: 100%;
      vertical-align: baseline;
      font-family: inherit;
      font-weight: inherit;
      color: inherit;
      -webkit-appearance: none;
      appearance: none;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    body {
      font: 14px "Helvetica Neue", Helvetica, Arial, sans-serif;
      line-height: 1.4em;
      background: #f5f5f5;
      color: #4d4d4d;
      min-width: 230px;
      max-width: 550px;
      margin: 0 auto;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      font-weight: 300;
    }

    :focus {
      outline: 0;
    }

    .hidden {
      display: none;
    }

    #todoapp {
      background: #fff;
      margin: 180px 0 40px 0;
      position: relative;
      box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2), 0 25px 50px 0 rgba(0, 0, 0, 0.1);
    }

    #todoapp input::-webkit-input-placeholder {
      font-style: italic;
      font-weight: 300;
      color: #e6e6e6;
    }

    #todoapp input::-moz-placeholder {
      font-style: italic;
      font-weight: 300;
      color: #e6e6e6;
    }

    #todoapp input::input-placeholder {
      font-style: italic;
      font-weight: 300;
      color: gray;
    }

    #todoapp h1 {
      position: absolute;
      top: -160px;
      width: 100%;
      font-size: 60px;
      font-weight: 100;
      text-align: center;
      color: rgba(175, 47, 47, .8);
      -webkit-text-rendering: optimizeLegibility;
      -moz-text-rendering: optimizeLegibility;
      text-rendering: optimizeLegibility;
    }

    .new-todo,
    .edit {
      position: relative;
      margin: 0;
      width: 100%;
      font-size: 24px;
      font-family: inherit;
      font-weight: inherit;
      line-height: 1.4em;
      border: 0;
      color: inherit;
      padding: 6px;
      border: 1px solid #999;
      box-shadow: inset 0 -1px 5px 0 rgba(0, 0, 0, 0.2);
      box-sizing: border-box;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    .new-todo {
      padding: 16px;
      border: none;
      background: rgba(0, 0, 0, 0.003);
      box-shadow: inset 0 -2px 1px rgba(0, 0, 0, 0.03);
    }

    .main {
      position: relative;
      z-index: 2;
      border-top: 1px solid #e6e6e6;
    }

    .toggle-all {
      width: 1px;
      height: 1px;
      border: none; /* Mobile Safari */
      opacity: 0;
      position: absolute;
      right: 100%;
      bottom: 100%;
    }

    .toggle-all + label {
      width: 60px;
      height: 34px;
      font-size: 0;
      position: absolute;
      top: -52px;
      left: -13px;
      -webkit-transform: rotate(90deg);
      transform: rotate(90deg);
    }

    .toggle-all + label:before {
      content: "❯";
      font-size: 22px;
      color: #e6e6e6;
      padding: 10px 27px 10px 27px;
    }

    .toggle-all:checked + label:before {
      color: #737373;
    }

    .todo-list {
      margin: 0;
      padding: 0;
      list-style: none;
      max-height: 420px;
      overflow: auto;
    }

    .todo-list li {
      position: relative;
      font-size: 24px;
      border-bottom: 1px solid #ededed;
      height: 60px;
      box-sizing: border-box;
    }

    .todo-list li:last-child {
      border-bottom: none;
    }

    .todo-list .view .index {
      position: absolute;
      color: gray;
      left: 10px;
      top: 20px;
      font-size: 16px;
    }

    .todo-list li .toggle {
      text-align: center;
      width: 40px;
      /* auto, since non-WebKit browsers doesn't support input styling */
      height: auto;
      position: absolute;
      top: 0;
      bottom: 0;
      margin: auto 0;
      border: none; /* Mobile Safari */
      -webkit-appearance: none;
      appearance: none;
    }

    .todo-list li .toggle {
      opacity: 0;
    }

    .todo-list li .toggle + label {
      /*
            Firefox requires `#` to be escaped - https://bugzilla.mozilla.org/show_bug.cgi?id=922433
            IE and Edge requires *everything* to be escaped to render, so we do that instead of just the `#` - https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7157459/
        */
      background-image: url("data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20width%3D%2240%22%20height%3D%2240%22%20viewBox%3D%22-10%20-18%20100%20135%22%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2250%22%20fill%3D%22none%22%20stroke%3D%22%23ededed%22%20stroke-width%3D%223%22/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: center left;
    }

    .todo-list li .toggle:checked + label {
      background-image: url("data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20width%3D%2240%22%20height%3D%2240%22%20viewBox%3D%22-10%20-18%20100%20135%22%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2250%22%20fill%3D%22none%22%20stroke%3D%22%23bddad5%22%20stroke-width%3D%223%22/%3E%3Cpath%20fill%3D%22%235dc2af%22%20d%3D%22M72%2025L42%2071%2027%2056l-4%204%2020%2020%2034-52z%22/%3E%3C/svg%3E");
    }

    .todo-list li label {
      word-break: break-all;
      padding: 15px 15px 15px 60px;
      display: block;
      line-height: 1.2;
      transition: color 0.4s;
    }

    .todo-list li.completed label {
      color: #d9d9d9;
      text-decoration: line-through;
    }

    .todo-list li .destroy {
      display: none;
      position: absolute;
      top: 0;
      right: 10px;
      bottom: 0;
      width: 40px;
      height: 40px;
      margin: auto 0;
      font-size: 30px;
      color: #cc9a9a;
      margin-bottom: 11px;
      transition: color 0.2s ease-out;
    }

    .todo-list li .destroy:hover {
      color: #af5b5e;
    }

    .todo-list li .destroy:after {
      content: "×";
    }

    .todo-list li:hover .destroy {
      display: block;
    }

    .todo-list li .edit {
      display: none;
    }

    .todo-list li.editing:last-child {
      margin-bottom: -1px;
    }

    .footer {
      color: #777;
      padding: 10px 15px;
      height: 20px;
      text-align: center;
      border-top: 1px solid #e6e6e6;
    }

    .footer:before {
      content: "";
      position: absolute;
      right: 0;
      bottom: 0;
      left: 0;
      height: 50px;
      overflow: hidden;
      box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2), 0 8px 0 -3px #f6f6f6,
      0 9px 1px -3px rgba(0, 0, 0, 0.2), 0 16px 0 -6px #f6f6f6,
      0 17px 2px -6px rgba(0, 0, 0, 0.2);
    }

    .todo-count {
      float: left;
      text-align: left;
    }

    .todo-count strong {
      font-weight: 300;
    }

    .filters {
      margin: 0;
      padding: 0;
      list-style: none;
      position: absolute;
      right: 0;
      left: 0;
    }

    .filters li {
      display: inline;
    }

    .filters li a {
      color: inherit;
      margin: 3px;
      padding: 3px 7px;
      text-decoration: none;
      border: 1px solid transparent;
      border-radius: 3px;
    }

    .filters li a:hover {
      border-color: rgba(175, 47, 47, 0.1);
    }

    .filters li a.selected {
      border-color: rgba(175, 47, 47, 0.2);
    }

    .clear-completed,
    html .clear-completed:active {
      float: right;
      position: relative;
      line-height: 20px;
      text-decoration: none;
      cursor: pointer;
    }

    .clear-completed:hover {
      text-decoration: underline;
    }

    .info {
      margin: 50px auto 0;
      color: #bfbfbf;
      font-size: 15px;
      text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
      text-align: center;
    }

    .info p {
      line-height: 1;
    }

    .info a {
      color: inherit;
      text-decoration: none;
      font-weight: 400;
    }

    .info a:hover {
      text-decoration: underline;
    }

    /*
        Hack to remove background from Mobile Safari.
        Can't use it globally since it destroys checkboxes in Firefox
    */
    @media screen and (-webkit-min-device-pixel-ratio: 0) {
      .toggle-all,
      .todo-list li .toggle {
        background: none;
      }

      .todo-list li .toggle {
        height: 40px;
      }
    }

    @media (max-width: 430px) {
      .footer {
        height: 50px;
      }

      .filters {
        bottom: 10px;
      }
    }
  STYLE>
head>
<body>

<section id="todoapp">
  
  <header class="header">
    <h1>小张记事本h1>
    <input autofocus="autofocus" autocomplete="off" placeholder="请输入任务" class="new-todo" v-model="message"
           @keyup.enter="add" />
  header>
  
  <section class="main">
    <ul class="todo-list">
      <li class="todo" v-for="(item,index) in list">
        <div class="view">
          <span class="index">{{ index+1 }}.span>
          <label>{{ item }}label>
          <button class="destroy" @click="remove(index)">button>
        div>
      li>
    ul>
  section>
  
  <footer class="footer" v-show="list.length!=0">
      <span class="todo-count" v-if="list.length!=0">
        <strong>{{list.length}}strong> items left
      span>
    <button class="clear-completed" @click="clear">
      Clear
    button>
  footer>
section>
body>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js">script>
<script>
  let vm = new Vue({
    el: "#todoapp",
    data: {
      list: ["俊俏美人", "伟大的事迹", "人也可，才能爱"],
      message: "请记事",
    },
    methods: {
      add() {
        this.list.push(this.message)
      },
      remove(index) {
        this.list.splice(index, 1);
      },
      clear() {
        this.list = [];
      }
    }
  })
script>

html>

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  • 原文地址：https://blog.csdn.net/m0_67587248/article/details/133202159