The read-only HTMLImageElement
property x
indicates the x-coordinate of the <img>
element's left border edge relative to the root element's origin.
The x
and y
properties are only valid for an image if its display
property has the computed value table-column
or table-column-group
. In other words: it has either of those values set explicitly on it, or it has inherited it from a containing element, or by being located within a column described by either <col>
or <colgroup>
.
Syntax
let imageX = htmlImageElement.x;
Value
An integer value indicating the distance in pixels from the left edge of the element's nearest root element and the left edge of the <img>
element's border box. The nearest root element is the outermost <html>
element that contains the image. If the image is in an <iframe>
, its x
is relative to that frame.
In the diagram below, the left border edge is the left edge of the blue padding area. So the value returned by x
would be the distance from that point to the left edge of the content area.
[[File:../../../../../../media.prod.mdn.mozit.cloud/attachments/2014/09/29/8685/0930aa361239ef7b22a8da798410a855/boxmodel-(3).png|Diagram showing the relationships between the various boxes associated with an element]]
Note: The x
property is only valid if the computed value of the image's display
property is either table-column
or table-column-group
; in other words, either of those are set directly on the <img>
or they're inherited from a containing element or by being located within a column described by either <col>
or <colgroup>
.
Example
The example below demonstrates the use of the HTMLImageElement
properties x
and y
.
HTML
In this example, we see a table showing information about users of a web site, including their user ID, their full name, and their avatar image.
<table id="userinfo">
<colgroup>
<col span="2" class="group1">
<col>
</colgroup>
<tr>
<th>UserID</th>
<th>Name</th>
<th>Avatar</th>
</tr>
<tr>
<td>12345678</td>
<td>Johnny Rocket</td>
<td><img src="https://interactive-examples.mdn.mozilla.net/media/examples/grapefruit-slice-332-332.jpg"</td>
</th>
</table>
<pre id="log">
</pre>
JavaScript
The JavaScript code that fetches the image from the table and looks up its x
and y
values is below.
let logBox = document.querySelector("pre");
let tbl = document.getElementById("userinfo")
let log = msg => {
logBox.innerHTML += `${msg}<br>`;
}
let cell = tbl.rows[1].cells[2];
let image = cell.querySelector("img");
log(`Image's global X: ${image.x}`);
log(`Image's global Y: ${image.y}`);
This uses the <table>
's rows
property to get a list of the rows in the table, from which it looks up row 1 (which, being a zero-based index, means the second row from the top). Then it looks at that <tr>
(table row) element's cells
property to get a list of the cells in that row. The third cell is taken from that row (once again, specifying 2 as the zero-based offset).
From there, we can get the <img>
element itself from the cell by calling querySelector()
on the HTMLTableCellElement
representing that cell.
Finally, we can look up and display the values of the HTMLImageElement
's x
and y
properties.
CSS
The CSS defining the appearance of the table:
.group1 {
background-color: #d7d9f2;
}
table {
border-collapse: collapse;
border: 2px solid rgb(100, 100, 100);
font-family: sans-serif;
}
td, th {
border: 1px solid rgb(100, 100, 100);
padding: 10px 14px;
}
td > img {
max-width: 4em;
}
Result
The resulting table looks like this:
Specifications
Specification | Status | Comment |
---|---|---|
CSS Object Model (CSSOM) View ModuleThe definition of 'HTMLImageElement.x' in that specification. | Working Draft |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
x
|
Chrome
Full support 1 |
Edge
Full support 12 |
Firefox Full support 14 Full support 14 No support ? — 7 |
IE
No support No |
Opera
Full support Yes |
Safari
Full support Yes |
WebView Android
Full support Yes |
Chrome Android
Full support Yes |
Firefox Android Full support 14 Full support 14 No support ? — 7 |
Opera Android
Full support Yes |
Safari iOS
Full support Yes |
Samsung Internet Android
Full support Yes |
Legend
- Full support
- Full support
- No support
- No support
HTMLImageElement.x by Mozilla Contributors is licensed under CC-BY-SA 2.5.