NodeList.keys()

The NodeList.keys() method returns an iterator allowing to go through all keys contained in this object. The keys are unsigned integer.

Syntax

nodeList.keys();

Return value

Returns an iterator.

Example

var node = document.createElement("div"); 
var kid1 = document.createElement("p"); 
var kid2 = document.createTextNode("hey"); 
var kid3 = document.createElement("span"); 

node.appendChild(kid1); 
node.appendChild(kid2); 
node.appendChild(kid3); 

var list = node.childNodes; 

// Using for..of 
for(var key of list.keys()) { 
   console.log(key); 
}

The result is:

0
1
2

Specifications

Specification Status Comment
DOM
The definition of 'keys() (as iterable)' in that specification.
Living Standard Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? 50 (50) ? ? ?
Feature Android Android Webview Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support ? 50.0 (50) ? ? ? ?

See also

Document Tags and Contributors

 Contributors to this page: teoli
 Last updated by: teoli,