Convert js Array to JSon object for use with JQuery ajax

Question

in my app i need to send an javascript Array object to php script via ajax post  Something like this   var saveData   Array    saveData  a     2  saveData  c     1  alert saveData     ajax       type   POST       url   salvaPreventivo php       data saveData      async true           Array s indexes are strings and not int  so for this reason something like saveData join   amp    doesn t work   Ideas   Thanks in advance

User · Answer

You can iterate the key value pairs of the saveData object to build an array of the pairs  then use join   amp    on the resulting array    var a       for  key in saveData        a push key     saveData key      var serialized   a join   amp       a 2 amp c 1

User · Answer

Don t make it an Array if it is not an Array  make it an object   var saveData       saveData a   2  saveData c   1      equivalent to    var saveData    a  2  c  1      equivalent to     var saveData       saveData  a     2  saveData  c     1    Doing it the way you are doing it with Arrays is just taking advantage of Javascript s treatment of Arrays and not really the right way of doing it

User · Answer

There is actuly a difference between array object and JSON object  Instead of creating array object and converting it into a json object with JSON stringify arr   you can do this   var sels     Here is your array of SELECTs var json         for var i   0  l   sels length  i  lt  l  i        json sels i  id    sels i  value      There is no need of converting it into JSON because its already a json object   To view the same use json toSource

User · Answer

When using the data on the server  your characters can reach with the addition of slashes eg if string     hello   comes as string       hello     to solve the following function can be used later to use json decode    lt  php function stripslashes deep  value         value   is array  value                    array map  stripslashes deep    value                    stripslashes  value        return  value      array     POST  jObject     array   stripslashes deep  array     data   json decode  array  true   print r  data     gt

User · Answer

If the array is already defined  you can create a json object by looping through the elements of the array which you can then post to the server  but if you are creating the array as for the case above  just create a json object instead as sugested by Paolo Bergantino     var saveData   Array        saveData  quot a quot     2      saveData  quot c quot     1             creating a json object     var jObject         for i in saveData                jObject i    saveData i                Stringify this object and send it to the server          jObject  YAHOO lang JSON stringify jObject         ajax               type  post              cache false               url  quot salvaPreventivo php quot               data  jObject   jObject                      reading the data at the server      lt  php      data   json decode   POST  jObject    true       print r  data         gt         for jObject  YAHOO lang JSON stringify jObject   to work        include the follwing files         lt  -- Dependencies -- gt         lt script src  quot http   yui yahooapis com 2 9 0 build yahoo yahoo-min js quot  gt  lt  script gt          lt  -- Source file -- gt         lt script src  quot http   yui yahooapis com 2 9 0 build json json-min js quot  gt  lt  script gt   Hope this helps

[javascript] Convert js Array() to JSon object for use with JQuery .ajax

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