How do I build JSON dynamically in javascript

Question

var myJSON                      list1       1    2                    list2       a    b                    list3         key1     value1        key2     value2                      not a list     11                    How do I dynamically build this JSON structure in javascript  Google tells me to use use some push command  but I ve only found specific cases  So what do I write to enter data to  listX  and  not a list   Appending as well as creating a new list  The whole procedure begninning with   var myJSON

User · Answer

As myJSON is an object you can just set its properties  for example   myJSON list1     1   2      If you dont know the name of the properties  you have to use the array access syntax   myJSON  list  listnum      1   2      If you want to add an element to one of the properties  you can do   myJSON list1 push  3

User · Answer

First  I think you re calling it the wrong thing   JSON  stands for  JavaScript Object Notation  - it s just a specification for representing some data in a string that explicitly mimics JavaScript object  and array  string  number and boolean  literals  You re trying to build up a JavaScript object dynamically - so the word you re looking for is  object    With that pedantry out of the way  I think that you re asking how to set object and array properties      make an empty object var myObject           set the  list1  property to an array of strings myObject list1     1    2        you can also access properties by string myObject  list2            accessing arrays is the same  but the keys are numbers myObject list2 0     a   myObject  list2   1     b    myObject list3          instead of placing properties at specific indices  you    can push them on to the end myObject list3 push         or unshift them on to the beginning myObject list3 unshift      myObject list3 0   key1      value1   myObject list3 1   key2      value2    myObject not a list    11     That code will build up the object that you specified in your question  except that I call it myObject instead of myJSON   For more information on accessing properties  I recommend the Mozilla JavaScript Guide and the book JavaScript  The Good Parts

[javascript] How do I build JSON dynamically in javascript?

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