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How Can I View the Entire Object Structure in Node.js's `console.log()`?

Patricia Arquette
Patricia ArquetteOriginal
2024-12-10 18:34:10465browse

How Can I View the Entire Object Structure in Node.js's `console.log()`?

Getting the Full Object in Node.js's console.log()

When console.log() is used to display an object in Node.js, it typically only shows the object's type and a few of its properties. This can be frustrating when working with nested objects, as it makes it difficult to see the entire object structure.

The Problem:

Consider the following object:

const myObject = {
   "a": "a",
   "b": {
      "c": "c",
      "d": {
         "e": "e",
         "f": {
            "g": "g",
            "h": {
               "i": "i"
            }
         }
      }
   }
};

When we try to display this object using console.log(myObject), we get the following output:

{ a: 'a', b: { c: 'c', d: { e: 'e', f: [Object] } } }

As you can see, the property f is displayed as [Object], which is not very helpful.

The Solution:

To retrieve the full object, including the content of property f, we can use the util.inspect() function. This function allows us to specify several options to control the output format:

  • showHidden: Whether or not to show non-enumerable properties.
  • depth: The maximum depth to which nested objects should be recursively inspected.
  • colors: Whether or not to use ANSI color codes in the output.

Example 1:

const util = require('util')

console.log(util.inspect(myObject, {showHidden: false, depth: null, colors: true}))

Example 2 (Shortcut):

console.log(util.inspect(myObject, false, null, true))

Output:

Both examples will produce the following output:

{ a: 'a',  b: { c: 'c', d: { e: 'e', f: { g: 'g', h: { i: 'i' } } } } }

Now, we can see the entire contents of the object, including the nested f property.

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