HTML DOM Element hasAttribute() Method
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Definition and Usage
if the attribute exists, then hasAttribute() The method returns true, otherwise it returns false.
Note:if the specified attribute is explicitly set in the document, or if the document type sets a default value for the attribute,hasAttribute() All methods return true.
See Also:
Tutorial:
Example
Example 1
"myButton" has an onclick attribute:
let answer = myButton.hasAttribute("onclick");
Example 2
If the <a> element has a target attribute, change the value to "_self":
if (element.hasAttribute("target")) {
element.setAttribute("target", "_self");
}
Syntax
element.hasAttribute(name)
Parameter
| Parameter | Description |
|---|---|
| name | Required. The name of the attribute. |
Return Value
| Type | Description |
|---|---|
| Boolean | Returns true if the element has an attribute, otherwise false. |
Browser Support
element.hasAttribute() is a DOM Level 2 (2001) feature.
All browsers fully support it:
| Chrome | IE | Edge | Firefox | Safari | Opera |
|---|---|---|---|---|---|
| Chrome | IE | Edge | Firefox | Safari | Opera |
| Support | 9-11 | Support | Support | Support | Support |
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