Using React state to apply the "checked" attribute to a radio group. The attribute is assigned, but the checked input does not receive the applied styles

Question

Using React state to apply the "checked" attribute to a radio group. The attribute is assigned, but the checked input does not receive the applied styles

I'm facing an issue with a component that contains four radio inputs in a group. One of them is coded like this:

<div className="answer3 col-sm">
              <label>
                <input
                  type="radio"
                  id="answer1"
                  name="answer"
                  value="A"
                  checked={this.state.selectedOption === "A"}
                  onChange={this.onValueChange}
                />
                <img src="./images/answer1.png" alt="answer A" />
              </label>
            </div>

Even though the onChange method successfully updates the state and the correct input value is logged in the console, I'm experiencing a problem where my custom style for checked radio buttons is not being applied. The CSS for the style (used as a test) looks like this:

input[type="radio"]:checked {
  background-color: rgb(117, 17, 17);
}

I suspect that this issue might be related to the dynamic addition of the "checked" attribute bypassing the normal application of styles by CSS. Could this be the cause of the problem?

javascript html css reactjs

Answer 1

Answer №1

Don't rely on the dynamic 'checked' attribute for this issue. Instead, experiment with using the radio button input style by utilizing the :after pseudo class. You'll see positive results.

Answer 2

Don't rely on the dynamic 'checked' attribute for this issue. Instead, experiment with using the radio button input style by utilizing the :after pseudo class. You'll see positive results.

Answer 3

Answer №2

It appears that your React code is fine, but the issue seems to be related to CSS with the radio button and its reluctance to change background color. One potential solution could involve adjusting the accent-color, if I recall correctly.

Unfortunately, achieving this may prove to be quite challenging, and even if a workaround is found, it might not function consistently across different browsers.

Nevertheless, you can experiment with a simple approach like the one suggested below.

div {
  margin:10px;
}

.radio-btn:checked + label {
  color: blue;
}

<div>
  <input type="radio" class="radio-btn" id="1" value="1" name="radbtn"/> <label for="1">Radio Option 1</label><br/>
<input type="radio" class="radio-btn" id="2" value="2" name="radbtn"/> <label for="2">Radio Option 2</label><br/>
<input type="radio" class="radio-btn" id="3" value="3" name="radbtn"/> <label for="3">Radio Option 3</label>
</div>

Feel free to test it out and see if it resolves the issue.

Answer 4

It appears that your React code is fine, but the issue seems to be related to CSS with the radio button and its reluctance to change background color. One potential solution could involve adjusting the accent-color, if I recall correctly.

Unfortunately, achieving this may prove to be quite challenging, and even if a workaround is found, it might not function consistently across different browsers.

Nevertheless, you can experiment with a simple approach like the one suggested below.

div {
  margin:10px;
}

.radio-btn:checked + label {
  color: blue;
}

<div>
  <input type="radio" class="radio-btn" id="1" value="1" name="radbtn"/> <label for="1">Radio Option 1</label><br/>
<input type="radio" class="radio-btn" id="2" value="2" name="radbtn"/> <label for="2">Radio Option 2</label><br/>
<input type="radio" class="radio-btn" id="3" value="3" name="radbtn"/> <label for="3">Radio Option 3</label>
</div>

Feel free to test it out and see if it resolves the issue.

Answer 5

Answer №3

Have you considered using the computed style property to dynamically apply styles based on certain conditions? For example

<div className="answer3 col-sm">
  <label>
    <input
      className={value ?  'some-checked-class' : ''}
      type="radio"
      id="answer1"
      name="answer"
      value={value}
      checked={this.state.selectedOption === 'A'}
      onChange={this.onValueChange}
    />
    <img src="./images/answer1.png" alt="answer A" />
  </label>
</div>

Answer 6

Have you considered using the computed style property to dynamically apply styles based on certain conditions? For example

<div className="answer3 col-sm">
  <label>
    <input
      className={value ?  'some-checked-class' : ''}
      type="radio"
      id="answer1"
      name="answer"
      value={value}
      checked={this.state.selectedOption === 'A'}
      onChange={this.onValueChange}
    />
    <img src="./images/answer1.png" alt="answer A" />
  </label>
</div>

Using React state to apply the "checked" attribute to a radio group. The attribute is assigned, but the checked input does not receive the applied styles

Answer №1

Answer №2

Answer №3

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