HTMLStyleElement: disabled property

Returns true if the stylesheet is disabled, or there is no associated stylesheet; otherwise false. The value is false by default (if there is an associated stylesheet).

The property can be used to enable or disable an associated stylesheet. Setting the property to true when there is no associated stylesheet has no effect.

This example demonstrates programmatically setting the disabled property on a style that was defined in the HTML using the HTML <style> element. Note that you can also access any/all stylesheets in the document using Document.styleSheets.

HTML

The HTML contains an HTML <style> element that makes paragraph elements blue, a paragraph element, and a button that will be used to enabled and disable the style.

<button>Enable</button>
<style id="InlineStyle">
  p {
    color: blue;
  }
</style>
<p>Text is black when style is disabled; blue when enabled.</p>
<p></p>

JavaScript

The code below gets the style element using its id, and then sets it as disabled. As the style already exists, as it is defined in the SVG, this should succeed.

const style = document.getElementById("InlineStyle");
style.disabled = true;

We then add an event handler for the button that toggles the disabled value and button text.

const button = document.querySelector("button");

button.addEventListener("click", () => {
  style.disabled = !style.disabled;
  const buttonText = style.disabled ? "Enable" : "Disable";
  button.innerText = buttonText;
});

Result

The result is shown below. Press the button to toggle the disabled property value on the style used for the paragraph text.

This example is very similar to the one above, except that the style is defined programmatically.

HTML

The HTML is similar to the previous case, but the definition does not include any default styling.

<button>Enable</button>
<p>Text is black when style is disabled; blue when enabled.</p>
<p></p>

JavaScript

First we create the new style element on the HTML. This is done by first creating a style element using Document.createElement(), creating and appending a text node with the style definition, and then appending the style element to the document body.

// Create the `style` element
const style = document.createElement("style");
const node = document.createTextNode("p { color: blue; }");
style.appendChild(node);
document.body.appendChild(style);

We can then disable the style as shown below. Note that this is the earliest point at which setting the property to true will succeed. Before this point the document did not have an associated style, and so the value defaults to false.

//Disable the style
style.disabled = true;

Last of all we add an event handler for the button that toggles the disabled state and button text (this is the same as in the previous example).

const button = document.querySelector("button");

button.addEventListener("click", () => {
  style.disabled = !style.disabled;
  const buttonText = style.disabled ? "Enable" : "Disable";
  button.innerText = buttonText;
});

Result

The result is shown below. Press the button to toggle the disabled state on the style used for the text.

• SVGStyleElement.disabled