diff --git a/Day15/js/solution.js b/Day15/js/solution.js
new file mode 100644
index 0000000..b96308c
--- /dev/null
+++ b/Day15/js/solution.js
@@ -0,0 +1,77 @@
+const fs = require('fs');
+const path = require('path');
+
+function hashLabel(label) {
+    // Compute hash value for a given label
+    return [...label].reduce((value, char) => (value + char.charCodeAt(0)) * 17 % 256, 0);
+}
+
+function processSteps(steps) {
+    const boxes = Array.from({ length: 256 }, () => []);
+    const focalLengths = new Map();
+
+    steps.forEach(step => {
+        const [_, label, operation, focalLength] = step.match(/([a-z]+)([=-])(\d)?/);
+        const hashed = hashLabel(label);
+        const destination = boxes[hashed];
+
+        console.log(`Processing step: ${label}${operation}${focalLength}, Box: ${hashed}`);
+
+        if (operation === "=") {
+            if (!destination.includes(label)) {
+                destination.push(label);
+            }
+            focalLengths.set(label, parseInt(focalLength));
+        } else {
+            const index = destination.indexOf(label);
+            if (index !== -1) {
+                destination.splice(index, 1);
+            }
+            focalLengths.delete(label);
+        }
+    });
+
+    return boxes.reduce((totalPower, box, boxNumber) =>
+        totalPower + box.reduce((boxPower, label, i) =>
+            boxPower + (boxNumber + 1) * (i + 1) * focalLengths.get(label), 0), 0);
+}
+
+function readFileContent(filePath) {
+    try {
+        return fs.readFileSync(filePath, 'utf-8');
+    } catch (error) {
+        console.error(`Error reading file at ${filePath}:`, error.message);
+        process.exit(1);
+    }
+}
+
+function testAlgorithm() {
+    const testContent = readFileContent(path.join(__dirname, '../test.txt'));
+    const testSteps = testContent.replace(/\n/g, '').split(',');
+    const testResult = processSteps(testSteps);
+
+    console.log(`Test Result: ${testResult}`);
+    if (testResult !== 145) {
+        console.error(`Test failed. Expected result is 145, got ${testResult}.`);
+        process.exit(1);
+    } else {
+        console.log('Test passed.');
+    }
+}
+
+function main() {
+    try {
+        testAlgorithm();
+
+        const inputContent = readFileContent(path.join(__dirname, '../input.txt'));
+        const inputSteps = inputContent.replace(/\n/g, '').split(',');
+        const finalResult = processSteps(inputSteps);
+
+        console.log(`Final Result: ${finalResult}`);
+    } catch (error) {
+        console.error(`An error occurred in main: ${error.message}`);
+        process.exit(1);
+    }
+}
+
+main();