Web开发使用Angular实现用户密码强度判别的方法

// 获取字符串长度：中文也可正常获取
function GetStrLength(strData)
{
 if(!strData){
  return 0;
 }
 var length = 0;
 for (var i=0; i<strData.length; i++) { 
  var char = strData.charCodeAt(i); 
  //单字节加1 
  if ((char >= 0x0001 && char <= 0x007e) || (0xff60 <= char && char <= 0xff9f)) 
  { 
   length++; 
  } 
  else
  { 
   length+=2; 
  } 
 } 
 return length;
}

function isIncludeLiter(strData)
{ if(!strData){
  return false;
 }
 var reg = /[a-z]/i;
 if (!reg.test(strData))
 {
  return false;
 }
 return true;
}

function isIncludeNumber(strData)
{
 if(!strData){
  return false;
 }
 var reg = /[0-9]/;
 if (!reg.test(strData))
 {
  return false;
 }
 return true;
}

function isIncludeSChar(strData)
{
 if(strData == ""){
  return false;
 }
 // 全部特殊字符
 var reg = new RegExp("[`~!@#$^&*%()_+=|{}':;',\\-\\[\\].<>/?~！@#￥……&*（）――|{}【】‘；：”“'。，、？]") 
 return reg.test(strData);
}

function calcCharCount(strData) {
 var matchResult = {
  lineCounts: 0, //'-'个数
  dotCounts: 0 // '.'个数
 };
 if(!strData){
  return JSON.stringify(matchResult);
 }
 var lineChar = "-", dotChar = "\\."; // 要统计的字符
 var lineRegex = new RegExp(lineChar, 'g'), dotRegex = new RegExp(dotChar, 'g'); // 使用g表示整个字符串都要匹配
 var lineResult = strData.match(lineRegex);
 matchResult.lineCounts = !lineResult ? 0 : lineResult.length;
 var dotResult = strData.match(dotRegex);
 matchResult.dotCounts = !dotResult ? 0 : dotResult.length;
 return JSON.stringify(matchResult);
}

var len = GetStrLen($scope.newPswd); // 获取字符串长度
   var matchResult = JSON.parse(calcCharCount($scope.newPswd)); // 查找 '-' '.' 特殊字符的数量
   // 条件1 判断
   $scope.newPswdValidOne = (len >= 8 && len <= 16);
   // 条件2 判断
   $scope.newPswdValidTwo = !isIncludeSChar($scope.newPswd);
   // 包含 '-' '.' 特殊字符
   $scope.newPswdHasSChar = $scope.newPswdValidTwo && (matchResult.lineCounts > 0 || matchResult.dotCounts > 0);
   // 包含字母
   $scope.newPswdHasLiter = isIncludeLiter($scope.newPswd);
   // 包含数字
   $scope.newPswdHasNumber = isIncludeNum($scope.newPswd);
   // 条件3 判断
   $scope.newPswdValidThree = ($scope.newPswdHasNumber && $scope.newPswdHasLiter) || // 数字和字母
   ($scope.newPswdHasNumber && $scope.newPswdHasSChar) || // 数字和特殊字符
   ($scope.newPswdHasLiter && $scope.pswdValidChars) || // 字母和特殊字符
   ($scope.newPswdHasLiter && $scope.newPswdHasNumber && $scope.pswdValidChars); // 数字、字母和特殊字符
   // 新密码是否合法
   $scope.newPswdValid = $scope.newPswdValidOne && $scope.newPswdValidTwo && $scope.newPswdValidThree;
   // 密码等级判断
   // 3.密码中包含数字、字母和多个特殊字符时，密码强度强
   if ($scope.newPswdValid && $scope.newPswdHasNumber && $scope.newPswdHasLiter && (matchResult.lineCounts > 0 && matchResult.dotCounts > 0)) {
    $scope.newPswdRank = 3;
    $scope.newPswdRankText = "强";
   }
   // 2.密码中包含数字、字母和任一特殊字符时，密码强度中；
   else if ($scope.newPswdValid && $scope.newPswdHasNumber && $scope.newPswdHasLiter && (matchResult.lineCounts > 0 || matchResult.dotCounts > 0)) {
    $scope.newPswdRank = 2;
    $scope.newPswdRankText = "中";
   }
   // 1.密码中仅包含数字、字母时,密码强度弱;
   else if ($scope.newPswdValid && $scope.newPswdHasNumber && $scope.newPswdHasLiter) {
    $scope.newPswdRank = 1;
    $scope.newPswdRankText = "弱";
   }
   // 密码不合法
   else {
    $scope.newPswdRank = 0;
    $scope.newPswdRankText = "";
   }