You can access the number of entries in the history list via the history.length property. It works exactly like the strings' and arrays' length property. You can use this property to find how many pages the user has visited lately:

if (history.length) > 10
  alert("You've already accessed " + history length + " Web pages this session");
else
  alert("You've only accessed " + history.length + " Web pages this session");

People who read this tip also read these tips:

• Browsing the History List
• A JavaScript Visitor Counter
• Forgetting the Past
• Setting the Cookie's Expiration Date
• Shortcut Icons