Is there a way to display all properties (methods and attributes) within an object and its prototype chain, including both enumerable and non-enumerable ones? I am looking to gather information on all of them.
The browser being used for this task is Chrome.
Here is a sample code snippet:
for(let key in object) {
console.log(key, object[key]) // display key and corresponding value
}
For instance:
let object1 = { x: 5, y: "hello", z: { yes: "yes" }}
let object2 = new Object(object1)
object2.w = "no"
for (let key in object2) {
console.log(key, object2[key]) // display key and corresponding value
}I have a keen interest in both enumerable and non-enumerable properties.
Enumerating things that are not enumerable is a challenge. However, it is possible to define non-enumerable properties to prevent them from showing up in iterators like for...in or Object.keys. To find out more about this workaround, check out this Q&A: Is it possible to get the non-enumerable inherited property names of an object?
Currently, the simplest way to iterate through all properties, including both own properties and prototype properties, is by using a for...in loop:
for(var propertyName in obj) {
}
You can also utilize Object.hasOwnProperty to verify if a property does not belong to the object's prototype:
for(var propertyName in obj) {
if(obj.hasOwnProperty(propertyName)) {
// This property is not part of the object's prototype...
}
}
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