String.prototype.blink()
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see thecompatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Theblink() method ofString values creates a string that embeds this string in a<blink> element (<blink>str</blink>), which used to cause a string to blink in old browsers.
Note:AllHTML wrapper methods are deprecated and only standardized for compatibility purposes. For the case ofblink(), the<blink> element itself is removed from modern browsers, and blinking text is frowned upon by several accessibility standards. Avoid using the element in any way.
Syntax
blink()Parameters
None.
Return value
A string beginning with a<blink> start tag, then the textstr, and then a</blink> end tag.
Examples
Using blink()
The code below creates an HTML string and then replaces the document's body with it:
const contentString = "Hello, world";document.body.innerHTML = contentString.blink();This will create the following HTML:
<blink>Hello, world</blink>Warning:This markup is invalid, becauseblink is no longer a valid element.
You should avoid blinking elements altogether.
Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-string.prototype.blink |