子组件向父组件传值携带参数

2023/07/31 Vue2 1086 views 
<body>
  <div id="app">
    <div :style='{fontSize: fontSize + "px"}'>{{pmsg}}</div>
    <menu-item :parr='parr' @enlarge-text='handle($event)'></menu-item>
  </div>
  <script type="text/javascript" src="js/vue.js"></script>
  <script type="text/javascript">
    /*
      子组件向父组件传值-携带参数
    */
    
    Vue.component('menu-item', {
      props: ['parr'],
      template: `
        <div>
          <ul>
            <li :key='index' v-for='(item,index) in parr'>{{item}}</li>
          </ul>
          <button @click='$emit("enlarge-text", 5)'>扩大父组件中字体大小</button>
          <button @click='$emit("enlarge-text", 10)'>扩大父组件中字体大小</button>
        </div>
      `
    });
    var vm = new Vue({
      el: '#app',
      data: {
        pmsg: '父组件中内容',
        parr: ['apple','orange','banana'],
        fontSize: 10
      },
      methods: {
        handle: function(val){
          // 扩大字体大小
          this.fontSize += val;
        }
      }
    });
  </script>
</body>


相关推荐

  • 生成图片

    from PIL import Image, ImageColor, ImageDraw, ImageFont, ImageFilterdef create_image_with_text(size, color, text, font_path, font_size, text_color, shadow_color, output_path): """ Create a new image of specified size and color with centered text that has a border and shadow. :param size: A tuple con

    2025/01/23
    查看详情

  • 获取指定目录下的所有图片信息

    1 获取指定目录下的所有图片信息// 获取指定目录下的所有图片信息 public function getImagesInfo($directory) { $images = []; // 创建递归目录迭代器 $iterator = new \RecursiveIteratorIterator( new \RecursiveDirectoryIterator($directory, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY ); // 遍历目录中的每个文件 foreach (

    2024/08/20
    查看详情

  • Thinkphp各版本的PHP要求

    ThinkPHP 8.0：运行环境要求PHP8.0+，兼容PHP8.3ThinkPHP 6.1：运行环境要求PHP7.2+，兼容PHP8.1ThinkPHP 6.0：运行环境要求PHP7.2+，兼容PHP8.1ThinkPHP 5.1：运行环境要求PHP5.6+，兼容PHP8.0ThinkPHP 5.0：运行环境要求PHP5.4+，兼容PHP7.3

    2024/08/02
    查看详情