Update javascript.json

Added roman to integer code snippet

Author: r3medy

public/data/javascript.json

@@ -13,6 +13,36 @@
       }
     ]
   },
+  {
+  "title": "Roman to integer",
+  "description": "Converts roman numeric system into integers",
+  "code": [
+  "const romanToInt = function(roman) {",
+  "    let symbols = { 'I': 1, 'V': 5, 'X': 10, 'L': 50, 'C': 100, 'D': 500, 'M': 1000 };",
+  "    roman = Array.from(roman);",
+  "    let output = 0, toMiss = [];",
+  "    for(let i = 0; i < roman.length; i++) {",
+  "        let curr = symbols[roman[i]];",
+  "        let next = symbols[roman[i+1]];",
+  "",
+  "        if(!toMiss.includes(i)) {",
+  "            if(next > curr) {",
+  "                output+=(next-curr);",
+  "                toMiss.push(i+1);",
+  "            } else {",
+  "                output+=curr;",
+  "            }",
+  "        }",
+  "    }",
+  "    return output;",
+  "};",
+  "",
+  "// Usage:",
+  "console.log(romanToInt(\"IXV\")); // Output: '14'"
+ ],
+  "tags": ["javascript", "number", "format", "roman", "utility"],
+  "author": "r3medy"
+},
   {
     "categoryName": "Array Manipulation",
     "snippets": [