Identifying Ctrl+V in VueJS: A Guide

Question

Identifying Ctrl+V in VueJS: A Guide

Although I found the answers to this question, they were for jQuery and not suitable for my needs with vue.js.

Currently, I have successfully implemented code to detect single character presses:

export default {
  name: 'game',

  data () {
    return {
      allowInput: false,
      disabledKeys: ['ArrowLeft', 'Home', 'Control']
    }
  },

  methods: {
    keymonitor: function (event) {
      console.log(event.key)
      
      if (this.disabledKeys.indexOf(event.key) >= 0) {
        event.preventDefault()
        this.allowInput = false
        // alert('not allowed')
      } else {
        this.allowInput = true
      }
    },

    checkAnswer () {
      if (! this.allowInput) {
        alert('the key(s) you pressed is/are not allowed')
      }
    } /* END checkAnswer */
  } /* END methods */
} /* END export default */

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.2.2/vue.min.js"></script>

<input id="typeBox" ref="typeBox" autocomplete="off" placeholder="Type here..."
       @keydown="keymonitor" @keyup="checkAnswer()" />

The current code successfully prevents specific key presses like ArrowLeft, Home, and Control.

However, there's an issue:

I am now trying to find a solution to detect Ctrl+V in order to prevent paste action in the text box. If anyone has any insight on how to achieve this, I would greatly appreciate it. Thank you in advance.

javascript vue.js vuejs2 textinput

Answer 1

Answer №1

If you want to detect two keys in Vue, you can utilize the modifier keys feature. For instance, to detect Alt+C, you can simply use:

<input @keyup.alt.67="YourFunction">

Likewise, for Ctrl+V, you can do:

<input @keyup.ctrl.76="YourFunction">

Referring to the ASCII table found here, the ASCII code for Ctrl+v is 22. Therefore, you should be able to use:

<input @keyup.22="YourFunction">

Answer 2

If you want to detect two keys in Vue, you can utilize the modifier keys feature. For instance, to detect Alt+C, you can simply use:

<input @keyup.alt.67="YourFunction">

Likewise, for Ctrl+V, you can do:

<input @keyup.ctrl.76="YourFunction">

Referring to the ASCII table found here, the ASCII code for Ctrl+v is 22. Therefore, you should be able to use:

<input @keyup.22="YourFunction">

Answer 3

Answer №2

Feel free to check out the JavaScript Fiddle link provided below for more details:

keyup: function(event){
    if(event.keyCode == 86 && event.ctrlKey){
    // perform specific action
  }
}

Click here to access the JS Fiddle project.

Answer 4

Feel free to check out the JavaScript Fiddle link provided below for more details:

keyup: function(event){
    if(event.keyCode == 86 && event.ctrlKey){
    // perform specific action
  }
}

Click here to access the JS Fiddle project.

Answer 5

Answer №3

Although I may be a little behind, for those who are just arriving with the same inquiry, there's really no need for any fancy additions that aren't already included in Vue itself. If you'd rather not sift through all of this information

Check out this sandbox with a functional example to experiment with

Like the accepted answer mentions, Vue has its own event listeners as detailed here

It doesn't even necessitate key codes to function. Therefore, in your scenario, it will recognize the letter v

Here's an instance of a Vuetify component (although this will work with nearly any element):

<v-text-field
   v-model="textField"
   @keydown.prevent.ctrl.v=""
   @keydown.prevent.meta.v=""
   @click.prevent.right.exact=""
/>

Below breaks down the @stuff you see there:

To prevent key combinations like ctrl/cmd + v:
- In instances of combinations, in order for it to function, you'll have to monitor keydown instead of the alternatives
- To accommodate Windows users, employ
```
@keydown.prevent.ctrl.v=""
```
- To cater to Mac users, utilize
```
@keydown.prevent.meta.v=""
```
- @keydown observes the keydown event
- .prevent automatically enforces event.preventDefault()
- .ctrl/.meta represent the modifier keys being monitored
  - the meta key refers to the CMD key on Mac and the Windows key on Windows
- v is, obviously, the other key being watched
- the empty "" simply signifies that no function is assigned to it. If you wish to execute additional actions, you can easily reference a function here. For example:
```
@keydown.prevent.meta.v="doSomethingElse"
```
If you want to also prohibit the right-click (context) menu:
```
@click.prevent.right.exact=""
```
- @click tunes into the click event.
- .right serves as the modifier for exclusively detecting right-clicks
- .exact ensures that no other modifiers are accepted. Without this, someone could press shift + right-click and the context menu would appear as usual. In this case, .exact confirms that we're acting solely upon any version of right-click

Answer 6

Although I may be a little behind, for those who are just arriving with the same inquiry, there's really no need for any fancy additions that aren't already included in Vue itself. If you'd rather not sift through all of this information

Check out this sandbox with a functional example to experiment with

Like the accepted answer mentions, Vue has its own event listeners as detailed here

It doesn't even necessitate key codes to function. Therefore, in your scenario, it will recognize the letter v

Here's an instance of a Vuetify component (although this will work with nearly any element):

<v-text-field
   v-model="textField"
   @keydown.prevent.ctrl.v=""
   @keydown.prevent.meta.v=""
   @click.prevent.right.exact=""
/>

Below breaks down the @stuff you see there:

To prevent key combinations like ctrl/cmd + v:
- In instances of combinations, in order for it to function, you'll have to monitor keydown instead of the alternatives
- To accommodate Windows users, employ
```
@keydown.prevent.ctrl.v=""
```
- To cater to Mac users, utilize
```
@keydown.prevent.meta.v=""
```
- @keydown observes the keydown event
- .prevent automatically enforces event.preventDefault()
- .ctrl/.meta represent the modifier keys being monitored
  - the meta key refers to the CMD key on Mac and the Windows key on Windows
- v is, obviously, the other key being watched
- the empty "" simply signifies that no function is assigned to it. If you wish to execute additional actions, you can easily reference a function here. For example:
```
@keydown.prevent.meta.v="doSomethingElse"
```
If you want to also prohibit the right-click (context) menu:
```
@click.prevent.right.exact=""
```
- @click tunes into the click event.
- .right serves as the modifier for exclusively detecting right-clicks
- .exact ensures that no other modifiers are accepted. Without this, someone could press shift + right-click and the context menu would appear as usual. In this case, .exact confirms that we're acting solely upon any version of right-click

Identifying Ctrl+V in VueJS: A Guide

Answer №1

Answer №2

Answer №3

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