问Google Docs Apps脚本查找并替换为斜体

EN

function myFunction() {
  var wordToReplace = 'unchanged';
  var body = DocumentApp.getActiveDocument().getBody();
  toIta(wordToReplace, body);
}

function toIta(wordToReplace, body) {
  var findTextElm = body.findText(wordToReplace);
  while (findTextElm != null) {
    var text = findTextElm.getElement().asText();
    var start = findTextElm.getStartOffset();
    var end = findTextElm.getEndOffsetInclusive();
    text.setItalic(start, end, true);
    findTextElm = body.findText(wordToReplace, findTextElm);
  }
}