javascript regex for password containing at least 8 characters 1 number 1 upper and 1 lowercase

Question

I am trying to write a regular expression to validate a password which must meet the following criteria    Contain at least 8 characters  contain at least 1 number contain at least 1 lowercase character  a-z  contain at least 1 uppercase character  A-Z  contains only 0-9a-zA-Z   I tried the following but it doesn t seem to work   http   jsfiddle net many tentacles Hzuc9    lt input type  button  value  click  class  buttonClick    gt   lt input type  text    gt   lt div gt  lt  div gt    and         buttonClick   click function           if     input type text    filter function              return this value match         0-9        a-z        A-Z    a-zA-Z0-9  8                            div   text  pass          else              div   text  fail                 Any ideas

User · Answer

At least 8    8     str match         0-9        a-z        A-Z    a-zA-Z0-9  8

User · Answer

Your regular expression should look like           d       a-z        A-Z   0-9a-zA-Z  8       Here is an explanation              d              should contain at least one digit         a-z            should contain at least one lower case         A-Z            should contain at least one upper case    a-zA-Z0-9  8        should contain at least 8 from the mentioned characters

User · Answer

Using individual regular expressions to test the different parts would be considerably easier than trying to get one single regular expression to cover all of them  It also makes it easier to add or remove validation criteria   Note  also  that your usage of  filter   was incorrect  it will always return a jQuery object  which is considered truthy in JavaScript   Personally  I d use an  each   loop to iterate over all of the inputs  and report individual pass fail statuses  Something like the below       buttonClick   click function              input type text    each function              var validated    true          if this value length  lt  8              validated   false          if    d  test this value               validated   false          if    a-z   test this value               validated   false          if    A-Z   test this value               validated   false          if    0-9a-zA-Z   test this value               validated   false             div   text validated    pass     fail               use DOM traversal to select the correct div for this input above               Working demo

User · Answer

Your regex only allows exactly 8 characters  Use  8   to specify eight or more instead of  8    But why would you limit the allowed character range for your passwords  8-character alphanumeric passwords can be bruteforced by my phone  within minutes

[javascript] javascript regex for password containing at least 8 characters, 1 number, 1 upper and 1 lowercase

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