02_advanced/unterricht/tag14/02_promise-all/index.js

@@ -14,6 +14,10 @@ const getFileBy = (path = '', encoding = 'utf-8') => {
 Promise.all([
   getFileBy('data/file-01.txt'),
   getFileBy('data/file-02.txt'),
+  // (() =>
+  //   new Promise((resolve, reject) => {
+  //     return reject(new Error('something went wrong'));
+  //   }))(),
   getFileBy('data/file-03.txt'),
   getFileBy('data/file-04.txt'),
   getFileBy('data/file-05.txt'),

02_advanced/unterricht/tag14/04_mehrdim-array/index.html

@@ -22,6 +22,10 @@
         ['Clara', 76, 95, 89],
       ];
 
+      console.log(gradesTable[0][2]); //=> 'English'
+      console.log(gradesTable[1][0]); //=> 'Anna'
+      console.log(gradesTable[1][2]); //=> 92
+
       console.log(gradesTable[3][2]); // => 95
       console.log(['Clara', 76, 95, 89][2]); // => 95
       console.log(gradesTable[1][3]); // => 78
@@ -40,59 +44,98 @@
       gradesTable.push(['Benjamin', 99, 90, 75]);
 
       // TODO: optionale Übung: gradeTable in gradesObject über eigene Funktion parseToObj() umwandeln. Tipp: map. Beispiel 02_csv-to-obj.html aus Tag 12
-      const gradesTableObj = [
+
-        {
+      /*
-          name: 'Anna',
+      [
-          scores: [
+        ['Name', 'Mathematics', 'English', 'Biology'],
-            {
+        ['Anna', 85, 92, 78],
-              name: 'Mathematics',
+        ['Ben', 90, 88, 84],
-              score: 85,
+        ['Clara', 76, 95, 89],
-            },
-            {
-              name: 'English',
-              score: 92,
-            },
-            {
-              name: 'Biology',
-              score: 78,
-            },
-          ],
-        },
-        {
-          name: 'Ben',
-          scores: [
-            {
-              name: 'Mathematics',
-              score: 76,
-            },
-            {
-              name: 'English',
-              score: 95,
-            },
-            {
-              name: 'Biology',
-              score: 89,
-            },
-          ],
-        },
-        {
-          name: 'Clara',
-          scores: [
-            {
-              name: 'Mathematics',
-              score: 85,
-            },
-            {
-              name: 'English',
-              score: 92,
-            },
-            {
-              name: 'Biology',
-              score: 78,
-            },
-          ],
-        },
       ];
+      */
+
+      const parseToObj = (arr) => {
+        let returnTable = [];
+        console.log(arr);
+
+        // Students Array
+        for (let studentIdx = 1; studentIdx < arr.length; studentIdx++) {
+          let obj = {
+            name: arr[studentIdx][0],
+            scores: [],
+          };
+
+          // scores Array
+          for (let classIdx = 1; classIdx < arr[0].length; classIdx++) {
+            let classObj = {};
+
+            classObj.name = arr[0][classIdx];
+            classObj.score = arr[studentIdx][classIdx];
+
+            obj.scores.push(classObj);
+          }
+
+          returnTable.push(obj);
+        }
+
+        return returnTable;
+      };
+
+      const gradesTableObj = parseToObj(gradesTable);
+
+      // const gradesTableObj = [
+      //   {
+      //     name: 'Anna',
+      //     scores: [
+      //       {
+      //         name: 'Mathematics',
+      //         score: 85,
+      //       },
+      //       {
+      //         name: 'English',
+      //         score: 92,
+      //       },
+      //       {
+      //         name: 'Biology',
+      //         score: 78,
+      //       },
+      //     ],
+      //   },
+      //   {
+      //     name: 'Ben',
+      //     scores: [
+      //       {
+      //         name: 'Mathematics',
+      //         score: 76,
+      //       },
+      //       {
+      //         name: 'English',
+      //         score: 95,
+      //       },
+      //       {
+      //         name: 'Biology',
+      //         score: 89,
+      //       },
+      //     ],
+      //   },
+      //   {
+      //     name: 'Clara',
+      //     scores: [
+      //       {
+      //         name: 'Mathematics',
+      //         score: 85,
+      //       },
+      //       {
+      //         name: 'English',
+      //         score: 92,
+      //       },
+      //       {
+      //         name: 'Biology',
+      //         score: 78,
+      //       },
+      //     ],
+      //   },
+      // ];
 
       console.log(JSON.stringify(gradesTableObj, null, 2));
 
@@ -140,6 +183,7 @@
 
       console.log(inventory[1][1][2]); // => 30
       console.log(inventory[2][0][1]); // => 'Milk'
+      console.log(inventory[3][0][1]); // => 'GTA6'
 
       const inventoryObj = {
         floors: [

02_advanced/unterricht/tag14/06_chess-move/index.html

@@ -61,7 +61,7 @@
 
       const letterToChessIndex = (letter) => 'abcdefgh'.indexOf(letter);
       // => 'e' -> 4 <- Array Spalte (x)
-      const numberToChessIndex = (num) => 8 - num; // => '2' -> 6 <- Array Zeile (y)
+      const numberToChessIndex = (num) => 8 - Number(num); // => '2' -> 6 <- Array Zeile (y)
 
       const fieldToXPosition = (field) => letterToChessIndex(field.charAt(0));
       // => 'e2' -> 'e' ->   letterToChessIndex('e') -> 4