Replace bold to italic in google docs using apps script

问题

How to achieve a find and replace a bold font to italic using app script for Google docs. Note that it has to replace only the bold ones to italic and not all the text.

Say. A sample text

A quick brown fox jumps over a lazy dog a quick brown fox jumps over a lazy dog a quick brown fox jumps over a lazy dog.

回答1:

This is slightly awkward because there is nothing like "text node in bold" in Google Documents; the Text element does not have much internal structure. The solution seems to be to loop over its characters and test each on being bold. When the ranges of bold text are identified in the loop, they are set to italic with setItalic method. At the end, bold is removed from all text.

function bold2italic() {  
  var doc = DocumentApp.getActiveDocument();
  var text = doc.getBody().editAsText();
  var startBold = 0;
  var bold = false; 
  for (var i = 0; i < text.getText().length; i++) {
    if (text.isBold(i) && !bold) {
      startBold = i;
      bold = true;
    }
    else if (!text.isBold(i) && bold) {
      bold = false;
      text.setItalic(startBold, i-1, true);
    }
  }
  if (bold) {
    text.setItalic(startBold, i-1, true);
  }  
  text.setBold(false);
}

来源：https://stackoverflow.com/questions/36346494/replace-bold-to-italic-in-google-docs-using-apps-script