Convert javascript array to string

Question

I m trying to iterate over a  value  list and convert it into a string  Here is the code    var blkstr     each value  function idx2 val2                             var str   idx2         val2       alert str        return str     get   join              alert   function works just fine and displays the proper value  But somehow  jquery s  get   function doesn t get the right sort of object and fails  What am I doing wrong

User · Accepted Answer

If value is associative array  such code will work fine    x000D   x000D  var value      aaa    111    bbb    222    ccc    333     x000D  var blkstr       x000D    each value  function idx2 val2                        x000D    var str   idx2         val2  x000D    blkstr push str   x000D      x000D  console log blkstr join         x000D   lt script src  https   ajax googleapis com ajax libs jquery 1 7 1 jquery min js  gt  lt  script gt  x000D   x000D   x000D     output will appear in the dev console       As Felix mentioned  each   is just iterating the array  nothing more

User · Answer

Array prototype toString   The toString   method returns a string representing the specified array and its elements  var months     quot Jan quot    quot Feb quot    quot Mar quot    quot Apr quot    months toString        quot Jan Feb Mar Apr quot   Syntax arr toString    Return value A string representing the elements of the array   for more information   https   developer mozilla org en-US docs Web JavaScript Reference Global Objects Array toString

User · Answer

jQuery each is just looping over the array  it doesn t do anything with the return value   You are looking for jQuery map  I also think that get   is unnecessary as you are not dealing with jQuery objects    var blkstr     map value  function val index                             var str   index         val       return str     join            DEMO    But why use jQuery at all in this case  map only introduces an unnecessary function call per element   var values        for var i   0  l   value length  i  lt  l  i          values push i         value i          or if you actually have an object   for var id in value        if value hasOwnProperty id             values push id         value id             var blkstr   values join               It only uses the return value whether it should continue to loop over the elements or not  Returning a  falsy  value will stop the loop

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this s my function  convert object or array to json   function obj2json  data       str             first   true        each  data  function i  v             if first    true              str                 else first   false          if    type v     object                str          i          obj2arr v            else if    type v     array               str          i          obj2arr v            else              str           i           v                              return str            i just edit to v0 2       function obj2json  data       str       type  data     array                    first   true        each  data  function i  v             if first    true              str                 else first   false          if    type v     object                str          i          obj2json v            else if    type v     array               str          i          obj2json v            else              if   type  data     array                   str          v                    else                 str           i           v                              return str       type  data     array

User · Answer

You shouldn t confuse arrays with lists  This is a list         It has no length or other Array properties  This is an array         You can use array functions  methods and so  like someone suggested here  someArray toString    someObj toString    will not work on any other object types  like lists

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Converting From Array to String is So Easy    var A     Sunday   Monday   Tuesday   Wednesday   Thursday   array   A        That s it Now A is a string

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You can use  toString   to join an array with a comma   var array     a    b    c    array toString       result  a b c   Or  set the separator with array join           result  a  b  c

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Use join   and the separator    Working example    x000D   x000D  var arr     a    b    c   1  2   3    x000D   x000D     using toString method x000D  var rslt   arr toString     x000D  console log rslt   x000D   x000D     using join method  With a separator  -  x000D  rslt   arr join  -    x000D  console log rslt   x000D   x000D     using join method  without a separator  x000D  rslt   arr join      x000D  console log rslt   x000D   x000D   x000D

User · Answer

I needed an array to became a String rappresentation of an array I mean I needed that  var a     a   b   c      became a  real  array string-like to pass on query params so was easy to do  JSON stringify a     -- gt    a   b   c      maybe someone need it

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Four methods to convert an array to a string   Coercing to a string  var arr     a    b    c              a b c   var arr     a    b    c              a b c    Calling  toString    var arr     a    b    c   toString         a b c    Explicitly joining using  join    var arr     a    b    c   join         a b c   Defaults to     seperator   var arr     a    b    c   join            a b c    You can use other separators  for example        var arr     a    b    c   join             a  b  c    Using JSON stringify    This is cleaner  as it quotes strings inside of the array and handles nested arrays properly   var arr   JSON stringify   a    b    c            a   b   c

User · Answer

we can use the function join   to make the string from the array  and as parameter of function join we giv it    empty character  var newStr  mArray join

User · Answer

convert an array to a GET param string that can be appended to a url could be done as follows   function encodeGet array       return getParams     map array   function val index                                var str   index         escape val           return str        join   amp         call this function as  var getStr   encodeGet       search         input name  search     val        location       input name  location     val        dod            input name  dod     val        type           input name  type     val       window location     site search   getStr    which will forward the user to the  site search  page with the get params outlined in the array given to encodeGet

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var arr   new Array     var blkstr     each  1  2  3   function idx2 val2                            arr push idx2         val2       return arr     join         console log blkstr     OR   var arr   new Array       each  1  2  3   function idx2 val2                            arr push idx2         val2         console log arr join

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not sure if this is what you wanted but var arr     quot A quot    quot B quot    quot C quot    var arrString   arr join  quot    quot     This results in the following output   A  B  C

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Here s an example using underscore functions   var exampleArray     name   moe   age  40    name   larry   age  50    name   curly   age  60    var finalArray     compact   pluck exampleArray  name    join         Final output would be  moe larry curly

[javascript] Convert javascript array to string

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