Get JavaScript object from array of objects by value of property

The fine art of finding more

Need to find all objects matching a condition? Use Array.prototype.filter():

const candidates = array.filter(member => member.id < 3);
// candidates: [{ id: 1, name: 'Alice' }, { id: 2, name: 'Bob' }], the under 3 club
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Choose wisely: find() or filter()

find() is the efficient search hound, stopping as soon as it sniffs out a match. Ideal when you expect a unique object. filter() is the collector, gathering all matches in a neat array. Perfect when there are multiple matches.

Dynamic property search: flexible and versatile

You can search for objects with dynamic property names. Example:

const property = 'name';
const seeker = 'Alice';
const dynamicFind = array.find(item => item[property] === seeker);
// dynamicFind: { id: 1, name: 'Alice' }, Alice can't hide anymore!
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Prepare to meet the undefinables

find() might return undefined when there are no matches. Ensure to check the output:

if(foundObject) {
    // Object exists, time to pop the champagne! 
} else {
    // Object doesn't exist, better luck next time champ!
}
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Object finding: The techniques and tricks

Destructuring to the rescue

Use destructuring for providing cleaner readable code:

const bob = array.find(({ id }) => id === 2);
// bob: { id: 2, name: 'Bob' }, destructuring is cool, isn't it Bob? 
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When the position matters more: findIndex()

If you want the position, not the object:

const pos = array.findIndex(member => member.id === 2);
// pos: 1, Bob's hideout revealed!
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Overcoming common obstacles

• Non-existent properties: Avoid trouble, ensure properties exist before making checks.
• Type Coercion: Avoid funny surprises by using === for strict comparison.
• Nested properties: Unwrap nested properties correctly to reach the goal.

Performance: When efficiency matters

Avoid the old-fashioned loops and embrace find() and filter(). It will improve your code's performance, making old for-loops look like old sailboats racing with speedboats. 🚤

Taking care of the old folks: Code compatibility

When working with older browsers, remember they might not support find() or arrow functions. Use Babel to transpile your code and make it understandable for our elderly browsers.