A target=\"_top\" attribute specifies that the the linked page or form response will be opened in the topmost frame.
The topmost frame is the full browser tab and window.
A target="_top" on an <a> tag.
This link resides inside an <iframe>.
Clicking the link opens the linked page in the current browser tab (the top).
Note: Without target="_top" the linked page would open inside the iframe.
<iframe width="300" height="100"
style="border:3px dashed #ef4444;padding:30px; 0 0 30px"
srcdoc="<a target='_top' href='/html'>HTML Tutorial</a>">
</iframe>
The target attribute specifies where the linked page or form response will be opened.
The target="_top" value opens the page in the top frame which always is the full browser tab/window.
If no higher level frame is detected, it will be displayed on the current frame instead.
<tagname target="_top" />
These elements accept the _top value on the target attribute.
| Elements | Description | |
|---|---|---|
| <a> | Specifies an anchor link -- see example above | |
| <area> | Creates clickable areas inside an image map. | |
| <base> | Sets the base URL for all relative URLs on a page or site.. | |
| <form> | Specifies an HTML form. |
Here is when target 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 |
