What is the best way to ensure the autofocus is set on a button within a modal each time the

Question

What is the best way to ensure the autofocus is set on a button within a modal each time the

I am implementing a Vue.js 2 feature for displaying Bootstrap modals. Here is an example.

<div class="modal fade" tabindex="-1" role="dialog">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                <button type="button" autofocus class="btn btn-primary">Always focus</button>
            </div>
        </div>
    </div>
</div>

The goal is to allow users to press the Enter key to click on the Always focus button when the modal appears, without using the mouse. Additionally, pressing the left or right arrow keys should switch focus between the two buttons.

While the use of the autofocus attribute works initially, it loses focus on the Always focus button after the modal pops up for a second time.

How can I ensure that the Always focus button always retains focus whenever the modal is displayed? Alternatively, are there CSS, JavaScript, or Vue.js solutions to achieve this behavior?

It's worth noting that I am specifically working with Vue.js 2 and would appreciate any solutions within that framework, excluding jQuery.

javascript css vue.js button autofocus

Answer 1

Answer №1

To achieve this functionality with Vue, you can utilize the $refs object. (refer to documentation) Simply assign a ref attribute to the button, allowing you to access that element within your Vue code using

this.$refs.<whatever name you specified>

:

<div class="modal fade" tabindex="-1" role="dialog">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                <button ref="always_focus" type="button" autofocus class="btn btn-primary">Always focus</button>
            </div>
        </div>
    </div>
</div>

Next, update or add your show event handler for the modal:

export default {
  ...
  methods: {
    onModalShow() {
      this.$nextTick(() => {
        this.$refs.always_focus.focus();
      });
    }
  },
  ...
}

The use of Vue's $nextTick() function (documentation) is crucial in this context. It ensures that the button is visible before focusing on it. Placing the focus command within a $nextTick() callback guarantees that the DOM has completed updating after any changes to your data model (such as displaying the modal).

NOTE: The provided example may need adjustment based on your specific modal implementation.

Answer 2

To achieve this functionality with Vue, you can utilize the $refs object. (refer to documentation) Simply assign a ref attribute to the button, allowing you to access that element within your Vue code using

this.$refs.<whatever name you specified>

:

<div class="modal fade" tabindex="-1" role="dialog">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                <button ref="always_focus" type="button" autofocus class="btn btn-primary">Always focus</button>
            </div>
        </div>
    </div>
</div>

Next, update or add your show event handler for the modal:

export default {
  ...
  methods: {
    onModalShow() {
      this.$nextTick(() => {
        this.$refs.always_focus.focus();
      });
    }
  },
  ...
}

The use of Vue's $nextTick() function (documentation) is crucial in this context. It ensures that the button is visible before focusing on it. Placing the focus command within a $nextTick() callback guarantees that the DOM has completed updating after any changes to your data model (such as displaying the modal).

NOTE: The provided example may need adjustment based on your specific modal implementation.

Answer 3

Answer №2

To ensure that the button is always focused when the modal opens, you can utilize a 'mounted' function:

mounted: function() {
  document.getElementById("focus-button").focus();
}

Alternatively, you could listen for a key press event and trigger a click on the button if the enter key is pressed.

onKeyPress: function(e) {
  if (e.which == 13) {
    document.getElementById("focus-button").click();
  }
}

Answer 4

To ensure that the button is always focused when the modal opens, you can utilize a 'mounted' function:

mounted: function() {
  document.getElementById("focus-button").focus();
}

Alternatively, you could listen for a key press event and trigger a click on the button if the enter key is pressed.

onKeyPress: function(e) {
  if (e.which == 13) {
    document.getElementById("focus-button").click();
  }
}

What is the best way to ensure the autofocus is set on a button within a modal each time the

Answer №1

Answer №2

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