How Can I Dynamically Change Placeholder Color Using JavaScript?

Dynamically Modifying Placeholder Color with JavaScript

Despite the widespread availability of online resources, you may not have been able to locate a solution to update the placeholder color of a textbox using JavaScript. Here's a comprehensive guide to walk you through the process:

CSS variables provide a straightforward approach. To target a specific element, you can use the following CSS code:

::placeholder {
  color: var(--c, red);
}

Next, in your JavaScript, you can use the following function to dynamically update the placeholder color:

function update() {
  document.querySelector('input[type=text]').style.setProperty("--c", "blue");
}

Now, you can create a button with an "Update" function to trigger the placeholder color change. When clicked, it runs the update() function, resulting in the placeholder text turning blue.

<button onclick="update()\">Change</button>

Alternatively, you can modify the placeholder color in your JavaScript without using CSS variables:

document.getElementById('text').style.color = newColor;

This method directly sets the color property of the placeholder element. However, it's worth noting that the color property does not target the placeholder specifically, which may result in undesired color changes outside the placeholder.

Remember that browser support for this feature varies. Ensure you test your implementation across multiple browsers to ensure compatibility.

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