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How can you detect when somebody else's web page was last updated (or was changed)?
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Start by opening the webpage in your browser. In the address bar, type the following, “javascript:alert(document. lastModified)” after the web page's URL. When you press enter, you will see a popup that displays the latest updated date.
Go to google.com and copy-paste the full URL of any web page in the search box and prefix it with the inurl: operator. Step 2. Now go your browser's address bar - press Ctrl+L on a Windows machine or Cmd+L on Mac - and append &as_qdr=y25 to the end of the Google search URL. Press enter again.
01. Open the page for which you want to get the information.
02. Clear the address bar [where you type the address of the sites]:
and type or copy/paste from below:
javascript:alert(document.lastModified) 03. Press Enter or Go button.
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The last changed time comes with the assumption that the web server provides accurate information. Dynamically generated pages will likely return the time the page was viewed. However, static pages are expected to reflect actual file modification time.
This is propagated through the HTTP header Last-Modified. The Javascript trick by AZIRAR is clever and will display this value. Also, in Firefox going to Tools->Page Info will also display in the "Modified" field.
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