This content originally appeared on DEV Community and was authored by Nhan Nguyen
1. Use Weak References
Utilize JavaScript's WeakMap and WeakSet to manage objects without interfering with garbage collection when the objects are no longer in use.
const weakMap = new WeakMap();
let element = document.getElementById("myElement");
weakMap.set(element, "some metadata");
element = null; // Allows GC to collect it
2. Lazy Loading
Load data or modules only when they are needed. This approach minimizes the initial loading of unused resources, reducing memory consumption and improving load times.
3. Efficient Data Structures
Prefer efficient data structures like Map and Set over plain objects and arrays, especially when handling large datasets.
const data = new Map();
data.set("key", { /* large data */ });
4. Pooling Resources
Reuse instances instead of constantly creating and destroying them. Object pools are beneficial for managing frequently used and discarded objects.
const pool = [];
function createPooledObject() {
if (pool.length > 0) return pool.pop();
return new LargeObject();
}
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This content originally appeared on DEV Community and was authored by Nhan Nguyen
Nhan Nguyen | Sciencx (2025-01-09T03:17:25+00:00) JavaScript Memory Optimization Techniques. Retrieved from https://www.scien.cx/2025/01/09/javascript-memory-optimization-techniques/
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