• vue 生命周期钩子函数 mounted()实例

    在挂载后操作dom获取焦点。

    1. html>
    2. <html lang="zh-CN">
    3.  
    4. <head>
    5.   <meta charset="UTF-8">
    6.   <meta http-equiv="X-UA-Compatible" content="IE=edge">
    7.   <meta name="viewport" content="width=device-width, initial-scale=1.0">
    8.   <title>示例-获取焦点title>
    9.   
    10.   <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/reset.css@2.0.2/reset.min.css">
    11.   
    12.   <style>
    13.     html,
    14.     body {
    15.       height: 100%;
    16.     }
    17.     .search-container {
    18.       position: absolute;
    19.       top: 30%;
    20.       left: 50%;
    21.       transform: translate(-50%, -50%);
    22.       text-align: center;
    23.     }
    24.     .search-container .search-box {
    25.       display: flex;
    26.     }
    27.     .search-container img {
    28.       margin-bottom: 30px;
    29.     }
    30.     .search-container .search-box input {
    31.       width: 512px;
    32.       height: 16px;
    33.       padding: 12px 16px;
    34.       font-size: 16px;
    35.       margin: 0;
    36.       vertical-align: top;
    37.       outline: 0;
    38.       box-shadow: none;
    39.       border-radius: 10px 0 0 10px;
    40.       border: 2px solid #c4c7ce;
    41.       background: #fff;
    42.       color: #222;
    43.       overflow: hidden;
    44.       box-sizing: content-box;
    45.       -webkit-tap-highlight-color: transparent;
    46.     }
    47.     .search-container .search-box button {
    48.       cursor: pointer;
    49.       width: 112px;
    50.       height: 44px;
    51.       line-height: 41px;
    52.       line-height: 42px;
    53.       background-color: #ad2a27;
    54.       border-radius: 0 10px 10px 0;
    55.       font-size: 17px;
    56.       box-shadow: none;
    57.       font-weight: 400;
    58.       border: 0;
    59.       outline: 0;
    60.       letter-spacing: normal;
    61.       color: white;
    62.     }
    63.     body {
    64.       background: no-repeat center /cover;
    65.       background-color: #edf0f5;
    66.     }
    67.   style>
    68. head>
    69.  
    70. <body>
    71. <div class="container" id="app">
    72.   <div class="search-container">
    73.     <div class="search-box">
    74.       <input type="text" v-model="words" id="inp">
    75.       <button>搜索一下button>
    76.     div>
    77.   div>
    78. div>
    79.  
    80. <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js">script>
    81. <script>
    82.   const app = new Vue({
    83.     el: '#app',
    84.     data: {
    85.       words: ''
    86.     },
    87.     mounted() {
    88.       document.querySelector('#inp').focus()
    89.     },
    90.   })
    91. script>
    92.  
    93. body>
    94.  
    95. html>

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  • 原文地址：https://blog.csdn.net/qq_64628470/article/details/133996583