isAzNum static method

bool isAzNum(
  1. String str
)

【除字母和数字外无其他字符(只有字母数字的字符串)】返回true 否则false No characters except letters and numbers (only alphanumeric strings) Returns true Otherwise false

Implementation

static bool isAzNum(String str) {
  return RegExp("[a-zA-Z0-9]+").hasMatch(str);
}