Retrieve a specific nested key using its name

Question

Retrieve a specific nested key using its name

I am working with the following structure:

const config = { modules: [ { debug: true }, { test: false } ] }

My goal is to create a function that can provide the status of a specific module. For example:

getStatus("debug")

While I can access the array using config["modules"], how can I retrieve the value of a particular key within the nested objects?

config["modules"][0] would return debug: true, and config["modules"][1] would return test: false

What is the best way to locate a key within a numbered index?

javascript arrays typescript object

Answer 1

Answer №1

Utilizing bracket notation is essential for accessing object keys with the help of a predefined variable.

Considering:

const settings = { sections: [ { active: true }, { inactive: false } ] }

The following code snippet can be used to achieve your desired outcome:

var getStatus = section => settings.sections.filter(item => item.hasOwnProperty(section))[0][section];  
getStatus('active'); // true
getStatus('inactive'); // false

Answer 2

Utilizing bracket notation is essential for accessing object keys with the help of a predefined variable.

Considering:

const settings = { sections: [ { active: true }, { inactive: false } ] }

The following code snippet can be used to achieve your desired outcome:

var getStatus = section => settings.sections.filter(item => item.hasOwnProperty(section))[0][section];  
getStatus('active'); // true
getStatus('inactive'); // false

Answer 3

Answer №2

Think of it like interacting with an object by calling config["modules"] [0]["debug"]

If you're unsure about the index, you can simply filter the array and retrieve the first item where debug is defined

var y = config["modules"].filter(x => x["debug"] !== undefined)
return y[0]["debug"]

Answer 4

Think of it like interacting with an object by calling config["modules"] [0]["debug"]

If you're unsure about the index, you can simply filter the array and retrieve the first item where debug is defined

var y = config["modules"].filter(x => x["debug"] !== undefined)
return y[0]["debug"]

Retrieve a specific nested key using its name

Answer №1

Answer №2

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