dynamic dropdown displaying colors for selection

Question

dynamic dropdown displaying colors for selection

Using a bootstrap form to add a printer involves selecting the material and color. The dynamic dropdowns are functioning correctly, but it is necessary to display the selected color for user clarity. Please guide me on how to pass the color along with its respective name from the script so that users can easily see which color they are adding.

https://i.sstatic.net/Poa4P.png

 ...JavaScript code here...

<?php
...PHP code here...
include '../header.php';
?>

<!DOCTYPE html>
<html>

...HTML content here...

javascript html css

Answer 1

Answer №1

To enhance the functionality of your addOption function, consider implementing a background color feature for each option or assigning them a specific class.

function addOption(selectbox, value, text) {
  var optn = document.createElement("OPTION");
  optn.text = text;
  optn.value = value;
  if(optn.value != ('Transparent/clear' || 'Glow-in-the-dark')){
    optn.style.background = value
  }
  selectbox.options.add(optn)
}

An alternative approach would be to achieve this using CSS styling:

option[value="Black"] {
  background: black;
}

option[value="Red"] {
  background: red;
}

/* Extend this list with more colors as needed */

Check out the demo below:

function addOption(selectbox, value, text) {
  var optn = document.createElement("OPTION");
  optn.text = text;
  optn.value = value;
  if(optn.value != ('Transparent/clear' || 'Glow-in-the-dark')) {
    optn.style.background = value;
  }
  selectbox.options.add(optn);
}

// Demo Implementation
const selectBox = document.querySelector('select')
const colors = ['Red', 'Transparent/clear', 'Glow-in-the-dark', 'Blue', 'Goldenrod']

colors.forEach(color => addOption(selectBox, color, color))

<select></select>

Answer 2

To enhance the functionality of your addOption function, consider implementing a background color feature for each option or assigning them a specific class.

function addOption(selectbox, value, text) {
  var optn = document.createElement("OPTION");
  optn.text = text;
  optn.value = value;
  if(optn.value != ('Transparent/clear' || 'Glow-in-the-dark')){
    optn.style.background = value
  }
  selectbox.options.add(optn)
}

An alternative approach would be to achieve this using CSS styling:

option[value="Black"] {
  background: black;
}

option[value="Red"] {
  background: red;
}

/* Extend this list with more colors as needed */

Check out the demo below:

function addOption(selectbox, value, text) {
  var optn = document.createElement("OPTION");
  optn.text = text;
  optn.value = value;
  if(optn.value != ('Transparent/clear' || 'Glow-in-the-dark')) {
    optn.style.background = value;
  }
  selectbox.options.add(optn);
}

// Demo Implementation
const selectBox = document.querySelector('select')
const colors = ['Red', 'Transparent/clear', 'Glow-in-the-dark', 'Blue', 'Goldenrod']

colors.forEach(color => addOption(selectBox, color, color))

<select></select>

Answer 3

Answer №2

Here is a solution for your problem.

<select>
    <option value="1" style="background:red">Red</option>
    <option value="2" style="background:yellow">Yellow</option>
    <option value="3" style="background:purple">Purple</option>
</select>

To make changes, update the addOption() method as shown below. When using the function, specify the color.

function addOption(selectbox, value, text, color) // added an extra parameter - color.
{
    var optn = document.createElement("OPTION");
    optn.text = text;
    optn.value = value;
	
    optn.style.backgroundColor = color; // new statement
       
    selectbox.options.add(optn);
}

Use the function call like this

// set the color as blue when calling.
addOption(document.drop_list.SubCat1,"Blue", "Blue", "blue");

Answer 4

Here is a solution for your problem.

<select>
    <option value="1" style="background:red">Red</option>
    <option value="2" style="background:yellow">Yellow</option>
    <option value="3" style="background:purple">Purple</option>
</select>

To make changes, update the addOption() method as shown below. When using the function, specify the color.

function addOption(selectbox, value, text, color) // added an extra parameter - color.
{
    var optn = document.createElement("OPTION");
    optn.text = text;
    optn.value = value;
	
    optn.style.backgroundColor = color; // new statement
       
    selectbox.options.add(optn);
}

Use the function call like this

// set the color as blue when calling.
addOption(document.drop_list.SubCat1,"Blue", "Blue", "blue");

dynamic dropdown displaying colors for selection

Answer №1

Answer №2

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