Once field element(s) is selected, NDS can help extract various attributes from the element. Here are built-in attributes you can use in Attribute drop-down select box.

Built-in Attribute

• Default

  The Default attribute is used to extract the content of the target element based on the type of element. For example if the target element is an input, return the value of the input box; if the target element is a select, return selected option text;

  Usually Default attribute works well for most elements.

  

  Here the result of default attribute is the same as that of Direct Text attribute.

• Direct Text

  return the selected element's inner text.

  

• HTML Code

  return the selected element's outer HTML Code.

  

• Link URL

  return the element's HREF attribute (url address) if the selected element is an A element.

  For some elements on web page, the cursor will be pointer when moving mouse on it, but the element itself is not an A element. So NDS cannot extract link URL for such element.

• Image URL

  return the element's SRC attribute if the selected element is an IMG element(image url), video element (video url), or iFrame element(iframe url).

• Image FileName

  return the image name if the selected element is an IMG element and filename existing.

• CSS background Image URL

  If the image is not rendered by an IMG element, but by CSS on the element, then using this attribute to extract background image URL.

• Email

  extract all email address in the selected element's content.

• OCR-Number

  When the element's content is encrypted or encoded, you can use OCR to recognize content.

  This attibute is to recognize the element content as numbers.

  For example, the price element on the page is encoded with a custom font. So extract the element's default attribute (or Direct Text) does not return what we want.

  

  We change the attribute to OCR-Number, and then click the preview icon(). Now there is a OCR button next to the price column title on the preview table.

  Click the OCR button, NDS will execute OCR to recognize the top 3 elements of the fields.

  

  If the OCR result is correct, then the recipe will follow the same step to recognize all fields when scraping.

• OCR-English

  recognize the element content as english text.

• OCR-Simple Chinese

  recognize the element content as Simple Chinese text.

NOTE: Here the result of OCR extraction is affected by various factors, such as page layout, screen resolution ratio. You'd better preview the OCR result before taking it for the recipe.