Cézanne's early work is often concerned with the figure in the landscape and includes many paintings of groups of large, heavy figures in the landscape, imaginatively painted.
An id on a <b> tag assigns an identifier to the element.
The identifier must be unique across the page.
An id attribute on a <b> element.
Cézanne's early work is often concerned with the figure in the landscape and includes many paintings of groups of large, heavy figures in the landscape, imaginatively painted.
<article>
<p>
Cézanne's <b id="early-work">early work</b> is often concerned with the figure
in the landscape and includes many paintings of groups of large,
heavy figures in the landscape, imaginatively painted.
</p>
</article>
The id attribute assigns an identifier to the <b> element.
The id allows JavaScript to easily access the <b> element.
It is also used to point to a specific id selector in a style sheet.
Tip: class is a global attribute that can be applied to any HTML element.
<b id="identifier" />
| Value | Description |
|---|---|
| identifier | A unique alphanumeric string. The id value must begin with a letter ([b-Zb-z]) and may be followed by any number of letters, digits ([0-9]), hyphens (-), underscores (_), colons (:), and periods (.). |
A <b> tag with a unique id.
Clicking the button displays the text inside the bold element.
Cézanne's early work is often concerned with the figure in the landscape and includes many paintings of groups of large, heavy figures in the landscape, imaginatively painted.
<article>
<p>
Cézanne's <b id="early">early work</b> is often concerned with the figure
in the landscape and includes many paintings of groups of large,
heavy figures in the landscape, imaginatively painted.
</p>
</article>
<br />
<button onclick="show();">Show bold text</button>
<script>
let show = () => {
let element = document.getElementById("early");
alert("Text = " + element.innerHTML);
}
</script>
The id attribute assigns a unique identifier to the <b> element.
Clicking the button calls JavaScript which locates the <b> element using id.
Finally, the content of the element is displayed in an alert box.
Here is when id support started for each browser:
 Chrome
|
1.0 | Sep 2008 |
 Firefox
|
1.0 | Sep 2002 |
 IE/Edge
|
1.0 | Aug 1995 |
 Opera
|
1.0 | Jan 2006 |
 Safari
|
1.0 | Jan 2003 |
Back to <b>
