How do I find the length of an object?

Question

"namelist":{
            "name":"xyz",
            "version":"1.0.0"
         }

How to find the length of the two values inside the namelist?

string length or something else? – Daniel A. White Nov 01 '18 at 19:12 — Daniel A. White, Nov 01 '18 at 19:12
`Object.keys(obj.namelist).length`? – Blue Nov 01 '18 at 19:13 — Blue, Nov 01 '18 at 19:13
Can you give an example of things you have tried? – Steve Bohmbach Nov 01 '18 at 19:13 — Steve Bohmbach, Nov 01 '18 at 19:13
You can use javascript for that task. – justDan Nov 01 '18 at 19:13 — justDan, Nov 01 '18 at 19:13

Al Fahad · Accepted Answer · 2018-11-01T19:51:06.080

You can find size of object (i.e total number of attributes in object)like this:

namelist = { "name":"xyz", "version":"1.0.0" }
var size = Object.keys(namelist).length;
console.log(size);

Output: 2

For getting size of value of name attribute ( e.g size of "xyz" in your case)

console.log(namelist.name.length)

Output: 3

For getting size of value of version attribute( e.g size of "1.0.0" in your case)

console.log(namelist.version.length)

Output: 5

score 1 · Answer 2 · answered Nov 01 '18 at 19:14

Get the keys as an array using Object.keys, and take the length of that array:

const obj = {
  namespace: {
    key1: 'whatever',
    key2: 'whatever2',
  }
}

const keys = Object.keys(obj.namespace) // ['key1', 'key2']
const keysLength = keys.length // 2

How do I find the length of an object?

2 Answers2