I'm trying to stringify multiple arrays, but unsuccessfully
var arr=new Array();
arr['do']='smth';
arr['asd']=[];
arr['asd']['dsa']='alo';
var string=JSON.stringify(arr)
console.log(arr);
console.log(string);
JSON.stringify returns []
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5 Answers
You're creating an array, and use it as if it was a json object. You should create an object if you need an object.
var obj={};
obj['do']='smth';
obj['asd']=[];
obj['asd']['dsa']='alo';
var string=JSON.stringify(obj)
console.log(obj);
console.log(string);
1 Comment
Jeff Shaver
You just suggested he name an object arr. downvote for just making it even more confusing for him.
If you want to use named keys in javascript, you should use an object as the JSON serializer ignores any named keys in arrays. A rule of thumb is that you should use arrays for [0], [1] etc., but objects for ['foo'], ['bar'] etc.
var obj = {
'do': 'smth',
'asd': {
'dsa': 'alo'
}
};
console.log( JSON.stringify(obj) );
//{"do":"smth","asd":{"dsa":"alo"}}
3 Comments
Jeff Shaver
Did you mean named keys don't exist in arrays?
Pointy
The keys do exist, but they're ignored by the JSON serializer.
h2ooooooo
@Pointy You're right - I changed my description a bit. It seems that Chrome's own console can't even output the variable right (run OP's code - type
arr and you get nothing, but console.log(arr) does.)Use an object:
var object = {};
object['do']='smth';
object['asd']=[];
object['asd']['dsa']='alo';
var string=JSON.stringify(object)
console.log(object);
console.log(string);
Comments
You cannot give the elements in an array names, they have their indizes as names. So if you would like to give them names use an JS-Object otherwise use the indizies in the definition as follows:
arr[0]='smth';
arr[1]=[];
arr[1][0]='alo';
Comments
Remember that JSON stands for javascript object notation , you should have objects with the required properties instead you are creating an array so replace your arrays with {} and add to this
