feat: add js solution to lc problem: No.2739 (doocs#2655)

Author: thinkasany

solution/2700-2799/2739.Total Distance Traveled/README.md

@@ -144,6 +144,23 @@ impl Solution {
 }
 ```
 
+```js
+var distanceTraveled = function (mainTank, additionalTank) {
+    let ans = 0,
+        cur = 0;
+    while (mainTank) {
+        cur++;
+        ans += 10;
+        mainTank--;
+        if (cur % 5 === 0 && additionalTank) {
+            additionalTank--;
+            mainTank++;
+        }
+    }
+    return ans;
+};
+```
+
 <!-- tabs:end -->
 
 <!-- end -->

solution/2700-2799/2739.Total Distance Traveled/README_EN.md

@@ -143,6 +143,23 @@ impl Solution {
 }
 ```
 
+```js
+var distanceTraveled = function (mainTank, additionalTank) {
+    let ans = 0,
+        cur = 0;
+    while (mainTank) {
+        cur++;
+        ans += 10;
+        mainTank--;
+        if (cur % 5 === 0 && additionalTank) {
+            additionalTank--;
+            mainTank++;
+        }
+    }
+    return ans;
+};
+```
+
 <!-- tabs:end -->
 
 <!-- end -->

solution/2700-2799/2739.Total Distance Traveled/Solution.js

@@ -0,0 +1,14 @@
+var distanceTraveled = function (mainTank, additionalTank) {
+    let ans = 0,
+        cur = 0;
+    while (mainTank) {
+        cur++;
+        ans += 10;
+        mainTank--;
+        if (cur % 5 === 0 && additionalTank) {
+            additionalTank--;
+            mainTank++;
+        }
+    }
+    return ans;
+};