NodeList.prototype.forEach()

The forEach() method of the NodeList interface calls the callback given in parameter once for each value pair in the list, in insertion order.

Syntax

forEach(callback)
forEach(callback, thisArg)

Parameters

callback

A function to execute on each element of someNodeList. It accepts 3 parameters:

currentValue

The current element being processed in someNodeList.

currentIndex Optional

The index of the currentValue being processed in someNodeList.

listObj Optional

The someNodeList that forEach() is being applied to.

thisArg Optional

Value to use as this when executing callback.

Return value

undefined.

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);

const list = node.childNodes;

list.forEach(
  function (currentValue, currentIndex, listObj) {
    console.log(`${currentValue}, ${currentIndex}, ${this}`);
  },
  'myThisArg'
);

The above code results in the following:

[object HTMLParagraphElement], 0, myThisArg
[object Text], 1, myThisArg
[object HTMLSpanElement], 2, myThisArg

Specifications

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Browser compatibility

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See also