Indexed Pages Checker Tool

Explanation of How the Indexed Pages Tool Function Works

The provided function embedded within the script dynamically adjusts the iframe height based on the content loaded inside it. This ensures that the iframe integrates seamlessly into your webpage without cutting off any content or adding unnecessary scrollbars. Here's a step-by-step breakdown of how it works:

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1. Event Listener Setup

javascript
var eventMethod = (window.addEventListener ? "addEventListener" : "attachEvent");

• The function checks if the browser supports modern addEventListener or the older attachEvent for compatibility with older browsers.
• Depending on the support, it assigns the appropriate method to the variable eventMethod.

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2. Listening for Post Messages

javascript
window[eventMethod](
  eventMethod == "attachEvent" ? "onmessage" : "message",
  function(e) {
    if (e.data.indexOf(id + ':') != 0) return; 
    var h = parseInt(e.data.substring(id.length + 1), 10);
    if (lh != h) document.getElementById(id).style.height = h + 'px'; 
    lh = h;
  },
  false
);

• Post Message Handling:

  • The function listens for message events from the iframe content.
  • It checks if the message starts with the iframe's unique ID (id), ensuring the message is intended for the specific iframe instance.

• Extracting Height:

  • Once a valid message is received, the height value (h) is extracted from the message.
  • The message format typically includes the ID followed by the height, e.g., "1c2276:500". The function isolates the numeric value after the colon.

• Height Adjustment:

  • The extracted height is compared to the last recorded height (lh). If the height has changed, the iframe’s height is updated dynamically using:

    javascript
    document.getElementById(id).style.height = h + 'px';
    

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3. Dynamic Resizing in Action

• When the iframe content changes (e.g., due to user interaction or new data loading), it sends a message to the parent page with the new height.
• This ensures that the iframe always fits the content inside, avoiding visual issues like cut-off sections or extra scrollbars.

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Key Benefits of the Function

1. Responsive Integration:

   • Automatically adjusts the iframe height to fit its content, ensuring a seamless look.

2. Browser Compatibility:

   • Works in modern and older browsers by using addEventListener or attachEvent.

3. Efficient Handling:

   • Updates the height only when a change is detected, reducing unnecessary operations.

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This functionality enhances the usability of the embedded Indexed Pages Tool by maintaining a clean, professional appearance on your webpage without manual adjustments.

Indexed Pages Checker