Use Vue's v-on directive to handle keyboard key combination events

Use Vue's v-on directive to handle keyboard key combination events

In Vue, we can use the v-on directive to listen to DOM events and respond accordingly handle events in the method. In addition to ordinary events, Vue also provides a way to handle keyboard key combination events.

In daily development, sometimes we need to monitor the user pressing multiple keyboard keys at the same time, such as the copy operation of Ctrl C. Vue's v-on directive can handle this type of event very well.

First, define an element in HTML and add the v-on directive to listen for the keydown event:

<template>
  <div>
    <button v-on:keydown="handleKeyDown">Press Ctrl + C</button>
  </div>
</template>

Then, define the corresponding method in the Vue instance:

<script>
export default {
  methods: {
    handleKeyDown(event) {
      // 判断是否按下了Ctrl键和C键
      if (event.ctrlKey && event.key === 'c') {
        console.log('Copy!');
      }
    },
  },
};
</script>

In the handleKeyDown method, we use event.ctrlKey to determine whether the Ctrl key is pressed, and event.key to determine which key is pressed. If the Ctrl key is pressed and the C key is pressed, the corresponding logic will be executed.

Through the above code, we have implemented an operation that monitors the Ctrl C key combination and outputs "Copy!" on the console. You can add corresponding logic to the handleKeyDown method according to your own needs to achieve more complex key combination operations.

At the same time, Vue also provides the abbreviation syntax of v-on. You can also use the @ symbol to replace v-on:

<template>
  <div>
    <button @keydown="handleKeyDown">Press Ctrl + C</button>
  </div>
</template>

Use the v-on instruction to handle keyboard key combination events. Make our code more concise and readable. Whether you are implementing shortcut key functions or performing complex keyboard operations, Vue's v-on instruction can provide good support.

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