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?

javascriptarraysjsonfilterfiltering

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:

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

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