cardBoard-wxapp/miniprogram/miniprogram_npm/tdesign-miniprogram/indexes/indexes.wxs

function getFirstCharacter(str, showFullIndex) {
  var res = str.toString();
  if (showFullIndex) {
    return res;
  }
  return res.substring(0, 1);
}

module.exports = {
  getFirstCharacter: getFirstCharacter,
};