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 51 50 (50) No support 38 10 (maybe prior)
Feature Android Android Webview Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support ? 50.0 (50) No support ? 10 (maybe prior) 51

See also

Document Tags and Contributors

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