[Snippets] - add a few useful JS snippets

public/consolidated/javascript.json

@@ -101,6 +101,24 @@
             }
         ]
     },
+    {
+        "categoryName": "Color Manipulation",
+        "snippets": [
+            {
+                "title": "RGB to Hex Color",
+                "description": "Converts RGB color values to hexadecimal color code.",
+                "author": "jjcantu",
+                "tags": [
+                    "javascript",
+                    "color",
+                    "conversion",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "function rgbToHex(r, g, b) {\n  const toHex = (n) => {\n    const hex = n.toString(16);\n    return hex.length === 1 ? '0' + hex : hex;\n  };\n  \n  return '#' + toHex(r) + toHex(g) + toHex(b);\n}\n\n// Usage:\nconsole.log(rgbToHex(255, 128, 0)); // Output: \"#ff8000\"\nconsole.log(rgbToHex(0, 255, 0)); // Output: \"#00ff00\"\n"
+            }
+        ]
+    },
     {
         "categoryName": "Date And Time",
         "snippets": [
@@ -547,6 +565,19 @@
                 "contributors": [],
                 "code": "const toScientificNotation = (num) => {\n  if (isNaN(num)) {\n    throw new Error('Input must be a number');\n  }\n  if (num === 0) {\n    return '0e+0';\n  }\n  const exponent = Math.floor(Math.log10(Math.abs(num)));\n  const mantissa = num / Math.pow(10, exponent);\n  return `${mantissa.toFixed(2)}e${exponent >= 0 ? '+' : ''}${exponent}`;\n};\n\n// Usage:\nconsole.log(toScientificNotation(12345)); // Output: '1.23e+4'\nconsole.log(toScientificNotation(0.0005678)); // Output: '5.68e-4'\nconsole.log(toScientificNotation(1000)); // Output: '1.00e+3'\nconsole.log(toScientificNotation(0)); // Output: '0e+0'\nconsole.log(toScientificNotation(-54321)); // Output: '-5.43e+4'\n"
             },
+            {
+                "title": "Format File Size",
+                "description": "Converts bytes into human-readable file size format.",
+                "author": "jjcantu",
+                "tags": [
+                    "javascript",
+                    "format",
+                    "size",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "function formatFileSize(bytes) {\n  if (bytes === 0) return '0 Bytes';\n  \n  const k = 1024;\n  const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];\n  const i = Math.floor(Math.log(bytes) / Math.log(k));\n  \n  return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];\n}\n\n// Usage:\nconsole.log(formatFileSize(1234)); // Output: \"1.21 KB\"\nconsole.log(formatFileSize(1234567)); // Output: \"1.18 MB\"\n"
+            },
             {
                 "title": "Format Number with Commas",
                 "description": "Formats a number with commas for better readability (e.g., 1000 -> 1,000).",
@@ -656,6 +687,19 @@
                 "contributors": [],
                 "code": "function countProperties(obj) {\n  return Object.keys(obj).length;\n}\n\n// Usage:\nconst obj = { a: 1, b: 2, c: 3 };\nconsole.log(countProperties(obj)); // Output: 3\n"
             },
+            {
+                "title": "Deep Clone Object",
+                "description": "Creates a deep copy of an object or array without reference.",
+                "author": "jjcantu",
+                "tags": [
+                    "javascript",
+                    "object",
+                    "clone",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "function deepClone(obj) {\n  if (obj === null || typeof obj !== 'object') return obj;\n  \n  const clone = Array.isArray(obj) ? [] : {};\n  \n  for (let key in obj) {\n    if (Object.prototype.hasOwnProperty.call(obj, key)) {\n      clone[key] = deepClone(obj[key]);\n    }\n  }\n  \n  return clone;\n}\n\n// Usage:\nconst original = { a: 1, b: { c: 2 }, d: [1, 2, 3] };\nconst cloned = deepClone(original);\nconsole.log(cloned); // Output: { a: 1, b: { c: 2 }, d: [1, 2, 3] }\n"
+            },
             {
                 "title": "Filter Object",
                 "description": "Filter out entries in an object where the value is falsy, including empty strings, empty objects, null, and undefined.",
@@ -930,6 +974,18 @@
                 "contributors": [],
                 "code": "function getInitials(name) {\n  return name.split(' ').map(part => part.charAt(0).toUpperCase()).join('');\n}\n\n// Example usage:\nconsole.log(getInitials('John Doe')); // Output: 'JD'\n"
             },
+            {
+                "title": "Generate UUID",
+                "description": "Generates a UUID (v4) string.",
+                "author": "jjcantu",
+                "tags": [
+                    "javascript",
+                    "uuid",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "function generateUUID() {\n  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {\n    const r = Math.random() * 16 | 0;\n    const v = c === 'x' ? r : (r & 0x3 | 0x8);\n    return v.toString(16);\n  });\n}\n\n// Usage:\nconsole.log(generateUUID()); // Output: \"a1b2c3d4-e5f6-4g7h-8i9j-k0l1m2n3o4p5\"\n"
+            },
             {
                 "title": "Mask Sensitive Information",
                 "description": "Masks parts of a sensitive string, like a credit card or email address.",

snippets/javascript/color-manipulation/rgb-to-hex-color.md

@@ -0,0 +1,21 @@
+---
+title: RGB to Hex Color
+description: Converts RGB color values to hexadecimal color code.
+author: jjcantu
+tags: color,conversion
+---
+
+```js
+function rgbToHex(r, g, b) {
+  const toHex = (n) => {
+    const hex = n.toString(16);
+    return hex.length === 1 ? '0' + hex : hex;
+  };
+
+  return '#' + toHex(r) + toHex(g) + toHex(b);
+}
+
+// Usage:
+console.log(rgbToHex(255, 128, 0)); // Output: "#ff8000"
+console.log(rgbToHex(0, 255, 0)); // Output: "#00ff00"
+``` 

snippets/javascript/number-formatting/format-file-size.md

@@ -0,0 +1,22 @@
+---
+title: Format File Size
+description: Converts bytes into human-readable file size format.
+author: jjcantu
+tags: format,size
+---
+
+```js
+function formatFileSize(bytes) {
+  if (bytes === 0) return '0 Bytes';
+
+  const k = 1024;
+  const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
+  const i = Math.floor(Math.log(bytes) / Math.log(k));
+
+  return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
+}
+
+// Usage:
+console.log(formatFileSize(1234)); // Output: "1.21 KB"
+console.log(formatFileSize(1234567)); // Output: "1.18 MB"
+``` 

snippets/javascript/object-manipulation/deep-clone-object.md

@@ -0,0 +1,27 @@
+---
+title: Deep Clone Object
+description: Creates a deep copy of an object or array without reference.
+author: jjcantu
+tags: object,clone
+---
+
+```js
+function deepClone(obj) {
+  if (obj === null || typeof obj !== 'object') return obj;
+
+  const clone = Array.isArray(obj) ? [] : {};
+
+  for (let key in obj) {
+    if (Object.prototype.hasOwnProperty.call(obj, key)) {
+      clone[key] = deepClone(obj[key]);
+    }
+  }
+
+  return clone;
+}
+
+// Usage:
+const original = { a: 1, b: { c: 2 }, d: [1, 2, 3] };
+const cloned = deepClone(original);
+console.log(cloned); // Output: 'original' but cloned
+``` 

snippets/javascript/string-manipulation/generate-uuid.md

@@ -0,0 +1,19 @@
+---
+title: Generate UUID
+description: Generates a UUID (v4) string.
+author: jjcantu
+tags: uuid, generate, string
+---
+
+```js
+function generateUUID() {
+  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+    const r = Math.random() * 16 | 0;
+    const v = c === 'x' ? r : (r & 0x3 | 0x8);
+    return v.toString(16);
+  });
+}
+
+// Usage:
+console.log(generateUUID()); // Output: "a1b2c3d4-e5f6-4g7h-8i9j-k0l1m2n3o4p5"
+```