Filtering in JavaScript can be efficiently done by checking for multiple values and only including them if they are not

Question

Filtering in JavaScript can be efficiently done by checking for multiple values and only including them if they are not

In my current coding challenge, I am attempting to create a filter that considers multiple values and only acts on them if they are not empty. Take the following example:

jobsTracked = [
        {
          "company": "Company1",
          "position": "Senior Frontend Developer",
          "role": "Frontend",
          "level": "Senior",
        },
        {
          "company": "Company2",
          "position": "Senior Frontend Developer",
          "role": "Frontend",
          "level": "Senior",
          
        }]

My specific challenge involves filtering based on three values from the data: position, role, and level. If any of these fields contain an empty string, I do not want to include it in the filter process. Can the JavaScript filter function handle this type of conditional filtering?

javascript arrays json filter filtering

Answer 1

Answer №1

Do you mean something similar when you refer to "filtering"?

let slot;

let role = 'Backend';
let level = 'Junior';
let position = 'Junior Backend Developer';

let filteredSlots = [];
let totalJobs = trackedJobs.length;
for (let j = 0; j < totalJobs; ++j) {
    slot = trackedJobs[j]; 
    
    // Filter process
    if ((slot['role'] != '' && slot['role'] == role) &&
        (slot['level'] != '' && slot['level'] == level) &&
        (slot['position'] != '' && slot['position'] == position)) {
        filteredSlots.push(slot);
    }
}

This code snippet performs the following actions:

It loops through each item in the array trackedJobs.
It selects only the items with non-empty properties that match the corresponding declared variables.
Only the selected items are stored in the filteredSlots array.

Answer 2

Do you mean something similar when you refer to "filtering"?

let slot;

let role = 'Backend';
let level = 'Junior';
let position = 'Junior Backend Developer';

let filteredSlots = [];
let totalJobs = trackedJobs.length;
for (let j = 0; j < totalJobs; ++j) {
    slot = trackedJobs[j]; 
    
    // Filter process
    if ((slot['role'] != '' && slot['role'] == role) &&
        (slot['level'] != '' && slot['level'] == level) &&
        (slot['position'] != '' && slot['position'] == position)) {
        filteredSlots.push(slot);
    }
}

This code snippet performs the following actions:

It loops through each item in the array trackedJobs.
It selects only the items with non-empty properties that match the corresponding declared variables.
Only the selected items are stored in the filteredSlots array.

Filtering in JavaScript can be efficiently done by checking for multiple values and only including them if they are not

Answer №1

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