669 v-on：绑定多个事件，参数传递，修饰符

Posted 2021-05-16 Keep going

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v-on绑定事件

v-on的用法

v-on的基本使用

v-on参数传递

v-on的修饰符

08_v-on的基本使用.html

<!DOCTYPE html>
<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>Document</title>

  <style>
    .area {
      width: 200px;
      height: 200px;
      background: red;
    }
  </style>
</head>
<body>
  <div id="app"></div>

  <template id="my-app">
    <!-- 完整写法: v-on:监听的事件="methods中方法" -->
    <button v-on:click="btn1Click">按钮1</button>
    <div class="area" v-on:mousemove="mouseMove">div</div>
    <!-- 语法糖 -->
    <button @click="btn1Click">按钮1</button>
    <!-- 绑定一个表达式: inline statement -->
    <button @click="counter++">{{counter}}</button>
    <!-- 绑定一个对象 -->
    <div class="area" v-on="{click: btn1Click, mousemove: mouseMove}"></div>
    <div class="area" @="{click: btn1Click, mousemove: mouseMove}"></div>
  </template>

  <script src="../js/vue.js"></script>
  <script>
    const App = {
      template: \'#my-app\',
      data() {
        return {
          message: "Hello World",
          counter: 100
        }
      },
      methods: {
        btn1Click() {
          console.log("按钮1发生了点击");
        },
        mouseMove() {
          console.log("鼠标移动");
        }
      }
    }

    Vue.createApp(App).mount(\'#app\');
  </script>
</body>
</html>

09_v-on的参数传递.html

<!DOCTYPE html>
<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>Document</title>
</head>
<body>
  <div id="app"></div>

  <template id="my-app">
    <!-- 默认传入event对象, 可以在方法中获取 -->
    <button @click="btn1Click">按钮1</button>
    <!-- $event可以获取到事件发生时的事件对象 -->
    <button @click="btn2Click($event, \'coderwhy\', 18)">按钮2</button>
  </template>

  <script src="../js/vue.js"></script>
  <script>
    const App = {
      template: \'#my-app\',
      data() {
        return {
          message: "Hello World"
        }
      },
      methods: {
        btn1Click(event) {
          console.log(event);
        },
        btn2Click(event, name, age) {
          console.log(name, age, event);
        }
      }
    }

    Vue.createApp(App).mount(\'#app\');
  </script>
</body>
</html>

10_v-on的修饰符.html

<!DOCTYPE html>
<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>Document</title>
</head>
<body>
  <div id="app"></div>

  <template id="my-app">
    <div @click="divClick">
      <button @click.stop="btnClick">按钮</button>
    </div>
    <input type="text" @keyup.enter="enterKeyup">
  </template>

  <script src="../js/vue.js"></script>
  <script>
    const App = {
      template: \'#my-app\',
      data() {
        return {
          message: "Hello World"
        }
      },
      methods: {
        divClick() {
          console.log("divClick");
        },
        btnClick() {
          console.log(\'btnClick\');
        },
        enterKeyup(event) {
          console.log("keyup", event.target.value);
        }
      }
    }

    Vue.createApp(App).mount(\'#app\');
  </script>
</body>
</html>

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