Convert Array to JSON Array

Question

How do I convert

["ID:2","ID:3","ID:4"]

to

[{
  "ID":2
},
{
  "ID":3
},
{
  "ID":4
}]

because this type of data i have to send to my webservice

Where/how do you create your Array ["ID:2","ID:3","ID:4"]? Is this format of any use? — Thomas
– Thomas, Commented Oct 10, 2017 at 8:45
Are you asking how to convert the array to JSON or are you asking how to convert the array of strings to an array of objects? Those are two distinct problems. — Quentin
– Quentin, Commented Oct 10, 2017 at 8:46
Try ["ID:2","ID:3","ID:4"].map(s => {let [key, val] = s.split(':'); return {[key]: +val}}) — Hassan Imam
– Hassan Imam, Commented Oct 10, 2017 at 8:49
You should really use jQuery. It's really great and does all things. — xenteros
– xenteros, Commented Oct 10, 2017 at 8:55
ahhh, you were being sarcastic (or ironic?) @xenteros - nice — Jaromanda X
– Jaromanda X, Commented Oct 10, 2017 at 9:21

Nina Scholz · Accepted Answer · 2017-10-10 08:47:01Z

3

For getting an array with objects, you could split the strings and build a new object with the wanted property and the numerical value.

var data = ["ID:2","ID:3","ID:4"],
    result = data.map(function (s) {
        var p = s.split(':'),
            t = {};
        t[p[0]] = +p[1];
        return t;
    });
    
console.log(result);

answered Oct 10, 2017 at 8:47

Nina Scholz

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Comments

Pavan · Accepted Answer · 2017-10-10 08:46:49Z

1

var newArrayOfObjs =arr.map((item)=> {
 var obj = {};
 var splitItems = item.split(':');
 obj[splitItems[0]] = splitItems[1];
 return obj;
}

You'll have to split the string on ':' and set the 0th element as key and 1st element as value.

answered Oct 10, 2017 at 8:46

Pavan

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Comments

SPlatten · Accepted Answer · 2017-10-10 08:52:39Z

1

var aryExample = ["ID:2","ID:3","ID:4"], aryNew = [];
for( var i in aryExample ) {
  aryNew.push({ID:Number(aryExample[i].split(":")[1])});
}
console.dir(aryNew);

That should do it.

edited Oct 10, 2017 at 8:52

answered Oct 10, 2017 at 8:48

SPlatten

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