What kind of data does this collection hold, and what is the best method to retrieve its stored values?

Question

What kind of data does this collection hold, and what is the best method to retrieve its stored values?

I recently received a code to program a logic for and I have successfully figured out my algorithm. However, I am facing difficulty determining the datatype of a particular declaration. My task involves comparing the values of "skills" in each row to 'JavaScript' and if it is true, then performing a specific task. The problem lies in accessing the value of skills itself. What datatype does this declaration hold and how can I access its values?

I have attempted to access the values using both the row/column format typical of tables and arrays, but so far, nothing has worked. If you need to add/remove rows from this table,

const newCandidates = [
 { name: "Kerrie", skills: ["JavaScript", "Docker", "Ruby"] },
 { name: "Mario", skills: ["Python", "AWS"] }
 ];

javascript arrays javascript-objects

Answer 1

Answer №1

In this scenario, you are presented with an array containing dictionaries. The elements within the array can be accessed as demonstrated below:

const employees = [{
    name: "Alice",
    department: ["Marketing", "Sales"]
  },
  {
    name: "Bob",
    department: ["Finance", "HR"]
  }
];

console.log(employees[0].department[1])
console.log(employees[1].name)

Answer 2

In this scenario, you are presented with an array containing dictionaries. The elements within the array can be accessed as demonstrated below:

const employees = [{
    name: "Alice",
    department: ["Marketing", "Sales"]
  },
  {
    name: "Bob",
    department: ["Finance", "HR"]
  }
];

console.log(employees[0].department[1])
console.log(employees[1].name)

Answer 3

Answer №2

Arrays in JavaScript are essentially objects.

const newCandidates = [
     { name: "Kerrie", skills: ["JavaScript", "Docker", "Ruby"] },
     { name: "Mario", skills: ["Python", "AWS"] }
    ];
    console.log("Data type of newCandidates: ", typeof newCandidates); // prints object type


// Accessing skills array in newCandidates

for(var i = 0; i < newCandidates.length; i++) {
let person = newCandidates[i];
console.log("Person's Name: ", person["name"]);
// Since skills is an array, iterate through it.
for(var j = 0; j < person["skills"].length; j++) {
let currentSkill = person["skills"][j];
// Do something with the currentSkill
console.log("Skill-" + j + " : " + currentSkill);
}
}

Answer 4

Arrays in JavaScript are essentially objects.

const newCandidates = [
     { name: "Kerrie", skills: ["JavaScript", "Docker", "Ruby"] },
     { name: "Mario", skills: ["Python", "AWS"] }
    ];
    console.log("Data type of newCandidates: ", typeof newCandidates); // prints object type


// Accessing skills array in newCandidates

for(var i = 0; i < newCandidates.length; i++) {
let person = newCandidates[i];
console.log("Person's Name: ", person["name"]);
// Since skills is an array, iterate through it.
for(var j = 0; j < person["skills"].length; j++) {
let currentSkill = person["skills"][j];
// Do something with the currentSkill
console.log("Skill-" + j + " : " + currentSkill);
}
}

Answer 5

Answer №3

If you have an array of JavaScript objects enclosed in curly brackets, try using a forEach loop to iterate through the array:

newCandidates.forEach(element => console.log(element.skills))

This code snippet will allow you to access the skills array within each object. You can then utilize other array methods to check if the skills include "JavaScript":

newCandidates.forEach(candidate => {
  if(candidate.skills.includes("JavaScript")) {
    *add your custom function here*
  }
})

Answer 6

If you have an array of JavaScript objects enclosed in curly brackets, try using a forEach loop to iterate through the array:

newCandidates.forEach(element => console.log(element.skills))

This code snippet will allow you to access the skills array within each object. You can then utilize other array methods to check if the skills include "JavaScript":

newCandidates.forEach(candidate => {
  if(candidate.skills.includes("JavaScript")) {
    *add your custom function here*
  }
})

What kind of data does this collection hold, and what is the best method to retrieve its stored values?

Answer №1

Answer №2

Answer №3

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