HTML <progress> id Attribute

HTML <pre>

HTML <q>

An id on a <progress> tag assigns an identifier to the element.

The identifier must be unique across the page.

Example

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An id attribute on a <progress> element.

Loading files...

50%

<div>Loading files... </div>
<progress id="load-progress" value="50" max="100"> 50% </progress>

Using id

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The id attribute assigns an identifier to the <progress> element.

The id allows JavaScript to easily access the <progress> element.

It is also used to point to a specific id selector in a style sheet.

Tip: id is a global attribute that can be applied to any HTML element.

Syntax

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<progress id="identifier" />

Values

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Value	Description
identifier	A unique alphanumeric string. The id value must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens (-), underscores (_), colons (:), and periods (.).

More Examples

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A <progress> element with a unique id attribute. The element is loading from 0 to 100% repeatedly. Clicking the button displays the current progress value.

Loading files...

50%

<div>Loading files... </div>
<progress id="myprogress" max="100" value="50"> 50% </progress>

<br />
<button onclick="show();">Show progress value</button>

<script>

  setInterval( function(){
      let value = document.getElementById("myprogress").value;
      value = Math.min(value + .1, 100) % 100;
      document.getElementById("myprogress").value = value;
  }, 10 );


  let show = () => {
    let element = document.getElementById("myprogress");
    alert("Value = " + parseInt(element.value));
  }

</script>

Code explanation

The id attribute assigns a unique identifier for the <progress>.

JavaScript locates the <progress> using the id.

It then increases the value of the <progress> by 1 each 10 milliseconds.

Browser support

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Here is when id support started for each browser: