We're looking for a user researcher to understand the needs of developers and designers. Is this you or someone you know? Check out the post: https://mzl.la/2IGzdXS

element.hasAttributeNS Redirect 1

« DOM Reference


hasAttributeNS returns a boolean value indicating whether the current element has the specified attribute.


result =element.hasAttributeNS(namespace,localName) 
  • result is the boolean value true or false.
  • namespace is a string specifying the namespace of the attribute.
  • localName is the name of the attribute.


// check that the attribute exists 
// before you set a value 
var d = document.getElementById("div1"); 
if (d.hasAttributeNS( 
        "special-align")) {
   d.setAttribute("align", "center");


DOM methods dealing with element's attributes:

Not namespace-aware, most commonly used methods Namespace-aware variants (DOM Level 2) DOM Level 1 methods for dealing with Attr nodes directly (seldom used) DOM Level 2 namespace-aware methods for dealing with Attr nodes directly (seldom used)
setAttribute (DOM 1) setAttributeNS setAttributeNode setAttributeNodeNS
getAttribute (DOM 1) getAttributeNS getAttributeNode getAttributeNodeNS
hasAttribute (DOM 2) hasAttributeNS - -
removeAttribute (DOM 1) removeAttributeNS removeAttributeNode -


DOM Level 2 Core: hasAttributeNS



Document Tags and Contributors

Last updated by: Sheppy,