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
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solved How do I find the length of an object? [duplicate]