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Finding the length of a JavaScript object
Suppose we have an object like this −
const obj = { name: "Ramesh", age: 34, occupation: "HR Manager", address: "Tilak Nagar, New Delhi", experience: 13 };
We are required to write a JavaScript function on Objects that computes their size (i.e., the number of properties in it).
Example
Following is the code −
const obj = { name: "Ramesh", age: 34, occupation: "HR Manager", address: "Tilak Nagar, New Delhi", experience: 13 }; Object.prototype.size = function(obj) { let size = 0, key; for (key in obj) { if (obj.hasOwnProperty(key)){ size++ }; }; return size; }; const size = Object.size(obj); console.log(size);
This will produce the following output on console −
5
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