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HTML DOM NodeList.keys() Method

  • Last Updated : 24 Jul, 2020

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


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Parameters: This method takes no parameter.

Return value: This method returns an iterator.

Example: In this example, we will create a NodeList and hence will get an iterator to get all keys from NodeList using this method.

    <meta charset="UTF-8">
    <title>HTML | DOM NodeList.keys() Method</title>
<body style="text-align:center;">
    <h1 style="color:green;">  
HTML | DOM NodeList.keys() Method
    <button onclick = "Geeks()">
    Click Here
    <p id="a"></p>
        var a = document.getElementById("a");
        a.innerHTML = "elements are : "
        function Geeks(){
           var parentNode = document.createElement("div"); 
            var c1 = document.createElement("p"); 
            var c2 = document.createElement("span"); 
            var c3 = document.createElement("h1"); 
            var nodelist = parentNode.childNodes;
            for(var key of nodelist.keys()) { 
 a.innerHTML += "<li>"+nodelist[key].localName + `</li>`;


Before Clicking Button:

After Clicking Button: Elements are called using keys iterator.

In the console: Iterator keys can be seen.

Supported Browsers:

  • Google Chrome
  • Edge
  • Firefox
  • Safari
  • Opera

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