HTMLProgressElement: value property

The value property of the HTMLProgressElement interface represents the current progress of the <progress> element.

Value

A floating point number. If max value is not set on the progress bar then value ranges between 0.0 and 1.0. If the max value is set then the value ranges between 0 and the max value.

If the value property is not set on HTMLProgressElement object, then the progress bar remains indeterminate.

Examples

HTML

Determinate Progress bar: <progress id="pBar"></progress> <span>0</span>%
<br />
Indeterminate Progress bar: <progress></progress>

JavaScript

const pBar = document.getElementById("pBar");
const span = document.getElementsByTagName("span")[0];

pBar.max = 100;
pBar.value = 0;

setInterval(() => {
  pBar.value = pBar.value < pBar.max ? pBar.value + 1 : 0;

  span.textContent = Math.trunc(pBar.position * 100);
}, 100);

Specifications

Browser compatibility