JavaScript验证字符串是否包含英文字符、数字或者汉字代码实例

function done(input, withEnglishCharacter, withNumber, withChineseCharacter) { 
  if (!Boolean(withEnglishCharacter) && !Boolean(withNumber) && !Boolean(withChineseCharacter)) { 
    return false; //如果英文字母、数字和汉字都没有，则返回false 
  } 
  var pattern = '^['; 
    if (Boolean(withEnglishCharacter)) { 
      pattern += 'a-zA-Z'; 
    } 
    if (Boolean(withNumber)) { 
      pattern += '0-9'; 
    } 
    if (Boolean(withChineseCharacter)) { 
      pattern += '\\u4E00-\\u9FA5'; 
    } 
  pattern += ']+$';
 
  var regex = new RegExp(pattern); 
  if (input.match(regex)) { 
    return true; 
  }
  else {
    return false; 
  } 
}
var one = "antzone";
var two = "softwhy.com888";
var three = "蚂蚁部落good";
console.log(done(one, true, true, false));
console.log(done(two, false, true, false));
console.log(done(three, true, false, true));