Run results for: Object key vs Array Filter

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Android

Device Platform: Desktop

Date tested: 5 months ago

Test name	Executions per second
Find from array using function reference	15635.9 Ops/sec
Find by object keys	30855.2 Ops/sec

Script Preparation code:

var arrayHandlers = [];
var objectHandlers = {};

var handlersCount = 100;

var functionHandlersToFind = [];
var hashesToFind = [];

var generateHash = function(ix) {
    return 'hdl' + ix;
}

var createHandler = function() {
    return function(data) {
        return "#Count:" + data;
    }
};

for (let i = 0; i < handlersCount; i++) {
    let theNewHandler = createHandler();
    arrayHandlers.push(theNewHandler);
    functionHandlersToFind.push(theNewHandler);
    let generatedHash = generateHash(i);
    objectHandlers[generatedHash] = theNewHandler;
    hashesToFind.push(generatedHash);
}

Tests:

Find from array using function reference
functionHandlersToFind.forEach((fnHandler) => arrayHandlers.find(handler => handler === fnHandler))
Find by object keys
hashesToFind.forEach((hash, ix) => objectHandlers[hash])

Run results for: Object key vs Array Filter

Access an stored element through object property key vs array filtering. Util for handlers references, when you need to store handlers and have acces for them later.

Find from array using function reference

Find by object keys