HTML DOM Element hasAttribute()

Does "myButton" have an onclick attribute:

let answer = myButton.hasAttribute("onclick");

If an <a> element has a target attribute, change the value to "_self":

if (element.hasAttribute("target")) {
element.setAttribute("target", "_self");
}

Description

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

element.hasAttribute( name)

Parameter	Description
name	Required. The name of the attribute.

Type	Description
Boolean	`true` if the element has the attribute, otherwise `false`.

element.hasAttribute() is a DOM Level 2 (2001) feature.

It is fully supported in all browsers:


Chrome	Edge	Firefox	Safari	Opera	IE
Yes	Yes	Yes	Yes	Yes	9-11