NodeList: keys() method

{{APIRef("DOM")}}

The NodeList.keys() method returns an {{jsxref("Iteration_protocols",'iterator')}} allowing to go through all keys contained in this object. The keys are unsigned integer.

Syntax

keys()

Parameters

None.

Return value

Returns an {{jsxref("Iteration_protocols","iterator")}}.

Example

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

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

let list = node.childNodes;

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

The result is:

0
1
2

Browser compatibility

{{Compat}}

See also

• Polyfill of NodeList.prototype.keys in core-js
• {{domxref("Node")}}
• {{domxref("NodeList")}}