The NodeList.entries() method returns an iterator allowing to go through all key/value pairs contained in this object. The values are Node objects.
Syntax
list.entries();
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 entry of list.entries()) { 
  console.log(entry);
}
results in:
Array [ 0, <p> ] Array [ 1, #text "hey" ] Array [ 2, <span> ]
Specifications
| Specification | Status | Comment | 
|---|---|---|
| DOM The definition of 'entries() (as iterable<Node>)' 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) | Firefox OS (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android | 
|---|---|---|---|---|---|---|---|---|
| Basic support | ? | ? | 50.0 (50) | ? | No support | ? | 10 (maybe prior) | 51 |