# HTML DOM hasAttribute() Method

Element Object

## Example

Find out if a <button> element has an onclick attribute:

var x = document.getElementById("myBtn").hasAttribute("onclick");

The result of x will be:

true
Try it yourself »

More "Try it Yourself" examples below.

## Definition and Usage

The hasAttribute() method returns true if the specified attribute exists, otherwise it returns false.

Tip: Use setAttribute() to add a new attribute or change the value of an existing attribute on an element.

## Browser Support

The numbers in the table specify the first browser version that fully supports the method.

Method |  |  |  |  |
--- | --- | --- | --- | --- | ---
hasAttribute() | Yes | 9.0 | Yes | Yes | Yes

## Syntax

element.hasAttribute(attributename)

## Parameters

Parameter | Type | Description
--- | --- | ---
attributename | String | Required. The name of the attribute you want to check if exists

## Technical Details

Return Value: | A Boolean, returns true if the element has attributes, otherwise false
DOM Version | Core Level 2 Element Object

## More Examples

## Example

Find out if an <a> element has a target attribute. If so, change the value of the target attribute to "_self":

// Get the <a> element with id="myAnchor"
var x = document.getElementById("myAnchor");
// If the <a> element has a target attribute, set the value to "_self"
if (x.hasAttribute("target")) {
x.setAttribute("target", "_self");
}
Try it yourself »

## Related Pages

HTML Tutorial: HTML Attributes

HTML DOM Reference: getAttribute() Method

HTML DOM Reference: removeAttribute() Method

HTML DOM Reference: setAttribute() Method

Element Object

### WEB HOSTING

UK Reseller Hosting

### WEB BUILDING

FREE Website BUILDER Free HTML5 Templates

### W3SCHOOLS EXAMS

HTML, CSS, JavaScript, PHP, jQuery, XML, and ASP Certifications

### SHARE THIS PAGE

### Color Picker

### HTML/CSS

HTML Tutorial HTML5 Tutorial CSS Tutorial CSS3 Tutorial Bootstrap Tutorial

### JavaScript

JavaScript Tutorial jQuery Tutorial jQuery Mobile Tutorial AngularJS Tutorial AJAX Tutorial JSON Tutorial

### Graphics

Canvas Tutorial SVG Tutorial Google Maps Tutorial

### Server Side

SQL Tutorial PHP Tutorial ASP Tutorial ASP.NET Tutorial VBScript Tutorial AppML Tutorial

### Web

Web Building Web Statistics Web Certification

### XML

XML Tutorial DTD Tutorial Schema Tutorial XML DOM Tutorial XPath Tutorial XSLT Tutorial XQuery Tutorial XSL-FO Tutorial RSS Tutorial WSDL Tutorial

### HTML/CSS

HTML Tag Reference HTML Event Reference HTML Color Reference CSS 1,2,3 Reference Bootstrap Reference

### JavaScript

JavaScript Reference HTML DOM Reference jQuery Reference jQuery Mobile Reference Google Maps Reference

### Server Side

PHP Reference SQL Reference ASP Reference VBScript Reference Razor Reference ASP.NET Reference

### XML

XML DOM Reference XSLT Reference XSL-FO Reference XPath Reference XQuery Reference Schema Reference RSS Reference SVG Reference

### HTML Charsets

HTML Character Sets HTML ASCII HTML ANSI HTML Windows-1252 HTML ISO-8859-1 HTML Symbols HTML UTF-8

### HTML/CSS

HTML Examples CSS Examples

### Browser Scripting

JavaScript Examples HTML DOM Examples jQuery Examples jQuery Mobile Examples AngularJS Examples AJAX Examples

### Server Scripting

PHP Examples ASP Examples VBScript Examples Razor Examples .NET Examples

### XML Languages

XML Examples DTD Examples XML DOM Examples XSL Examples XSLT Examples XPath Examples XQuery Examples Schema Examples RSS Examples SVG Examples