javascript - Use JS regexp to check if certain chars are in string -

-

I am working on a JS function to generate password strings, in this case lowercase, as uppercase, 0-9 and Punctuation I have put together a base string, such as: 

  function genpwd (azlc, azuc, num, pun, len) {var chars = ""; If (azlc) character + = "abcdefghijklmnopqrstuvwxyz"; If (Ezuk) Characters + = "ABCDEFGHKJLMNOPQRTUVX"; If (number) character + = "012345678901234567890123"; If (pun) chars + = "! @ #% & Amp; () =? + -_.: ;; * {} [] [] ^ $ /";   
 Then I select the characters in a new string and give it to the loop through the original string (given length of password) and give it as output password.  
 for  (i = 0; i & lt; len; i ++) {nextChar = chars.charAt (Math.For (Math.Random (* * charsN)); Password + = Next charge;} Return password;}   
 This is an easy way to create a random string, but does not guarantee that at least one letter output string from each "four group" .  
 I have seen some other examples of how to use regexps, but it can not be understood how to work It is to modify that I am thinking of solving it in the "simplest" way, maybe it is using a regexpe - something like this:  
  if (password.magic_regexp_stuff) {return password ;} Else {password = genpwd (azlc, azuc, num, pun, len);}   
     
  1.  Am I on the right track?  
  2.  Can I help with regexp?   
     
     Update:  
     Okay, after all some valuable input from you, I ended up with MV.  
     Thank you (thanks man!) By the CR suggestion was posted by PE, so I'm pretty sure nobrokered will have any other problem about "problem of data" (there is no other word for this). Can anyone confirm this? :)  
     I had to modify the parameters of the function and had to approach for the set of characters used. Any suggestions on improvement?   passwd (lane, ezlasi, ezuk, number, pans) {var len = parseInt (len), ar = [], checker = [], passwd = '', good = true , Number, number 2, set = 0; If (! LAN? Lan; 4) LAN = 12; If (! AZLC & amp; Azuke & amp; No & amp; Panning) {azlc = 1; Azuk = 1; Num = 1; Water = 1; } If (azlc) {ar.push ("abcdefghijklmnopqrstuvwxyz"); Checker.push (0); Set ++; } If (Azuk) {ar.push ("ABCDEFGHKLMNOPQRTUVWXYZ"); Checker.push (0); Set ++; } If (num) {ar.push ("0123456789"); Checker.push (0); Set ++; } If (pun) {ar.push ("! @ #% & Amp; () =? + -_. :: :: * [] [] ^ $ /"); Checker.push (0); Set ++; } (Var i = 0; i & lt; len; i ++) {num = rand (0, set); NUM2 = RAND (0, AR [NUM]. Length); Password + = ar [number] [NUM2]; Checker [NUM] = 1; } For (var i = 0; i   
     Many thanks to everyone for your help, it is appreciated!   
     
     
     I do not think regular expressions for the job are the right tools. Your efforts are always theoretically loop (Although not very likely) because there is no guarantee that no password ever matches a regular expression.  
     I have an easy way to make sure that each group contains a character explicitly, so it should be at least 4 characters long, assuming your password, I will recommend the following pseudo code :  
      chars = charFrom (azlc) + charFrom (azuc) + charFrom (num) + CharFrom do the following, length_off_powword - 4 times: character + = charform (eslc + ezuk + Numerator) character = shuffle (character)   
      implementation of charFrom ()  and  reshuffle ()  are left as an exercise for the reader.

Comments

Post a Comment

Popular posts from this blog

mysql - BLOB/TEXT column 'value' used in key specification without a key length -

-
I have developed an extension which works up to 1.6 on Magren (I'm trying Enterprise Edition, And I think the community is the same problem, because it is the same code). In my install script, I see the $ installer-> gt; CreateEntityTables ($ this- & gt; getTable ('alphanum / info')); The installation is done until it is not in the _text unit table. It crashed there! It turns out that when I log in to SQL and run it via PHPmyadmin, then this error is: Blob / Text column 'value' is used without the key 'key' . I saw the code there, and this is what is trying to create an index on the value column: -> addIndex ($ this- & gt; getIdxName ($ eavTableName, array ( 'attribute_id array (' attribute_id ',' value ')) - & gt; addIndex ($ this- & gt; getIdxName ($ eavTableName, array (' entity_type_id ' , 'Value')), array ('entity_type_id', 'value')) If there is no if statement is n...
Read more

c# - Using Vici cool Storage with monodroid -

-
Oh, for the moment I am not sure how it is officially supported, but for the success of the people Using Monodroid Vic Cool Storage I am able to leave and compile assemblies in my project, but while trying to use some classes, the errors of time have to be gathered. Especially when trying to connect like the example for Mono Touch string dbName = path. Cobain (environment. Gatefolder path (environment specialfolder personal), "mydb.db3"); // The following line will be called coolestation, where is the database, // to make it if it does not exist, and call a delegate that creates the necessary tables (only when the database file was newly created //) CSConfig.SetDB (DbName, true, () => {CSDatabase.ExecuteNonQuery ("Subscriber Integer Primary Key Attribute, Name Text (50) No, Number, Date First Text (30)");); There is no difference when I try to use the methods of CSConfig and when I cscfif If I try to pass 3 aggregates to STDB (3) then I get the invalid ...
Read more

python - referencing a variable in another function? -

-
I am an experienced TCL developer and write my own processes to help myself. I call it a proc i callVar, print out the value of the variable in a certain format, so I know that it is variable and what is the value "set foo 1; putVar foo" result 'foo = "1" I want to do the same thing in Python, but I can not find the answer :( In TCL I use the up command because when I pass the name of the variable, then I can see the value at the top. . I understand that an advanced light in the dragon There is no mechanism of r, but with its introspection capability, I would think that this is something trivial, but I am not getting the answer anywhere. It seems that this should work: and expanded: def foo (): y = "Hello World" printwor ("y") foo () y = "Hello World " You can, but you should not do so if your code is correct If is needed , then there is something wrong with your design, and you should probably use the dictionar...
Read more