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HTML | DOM History length Property

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  • Difficulty Level : Basic
  • Last Updated : 23 Nov, 2021

The History length property in HTML is used to return the count of URLs in the history list of the current browser window. The minimum value returned by this property is 1 because the current page is loaded at the moment whereas the maximum count that can be displayed in 50. Web browsers such as Internet Explorer and opera start the count with 0.


Return Value: It returns a numeric value that represents the number of entries in the session history.

Below program illustrates the History length Property in HTML:


<!DOCTYPE html>
        <title>DOM History length Property</title>
            h1 {
            h2 {
                font-family: Impact;
            body {
        <h2>DOM History length Property</h2>
         For displaying the count of URLs in the
         history, double click the "View URL Count"
        <button ondblclick="history_length()">
         View URL Count
        <p id="history"></p>
            function history_length() {
                var h = history.length;
                document.getElementById("history").innerHTML = h;


After click on the button: 

Supported Browsers: The browser supported by History length Property are listed below: 

  • Google Chrome
  • Internet Explorer
  • Firefox
  • Opera
  • Safari


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