js lec 1 added

lectures/lec5/p3/task1.js

@@ -0,0 +1,10 @@
+let items = {
+    'ручка': 20,
+    'альбом': "a16",
+    'тетрадь': 10
+};
+
+let entries = Object.entries(items);
+items=Object.fromEntries(entries.filter(entry =>!isNaN(parseFloat(entry[1]) && isFinite(Number(entry[1])))))
+
+console.log(items);

lectures/lec5/p3/task2.js

@@ -0,0 +1,17 @@
+
+function updateObject(oldObject, newObject) {
+    const [newKey, newValue] = Object.entries(newObject)[0];
+    if (newKey in oldObject) {
+        oldObject[newKey] += newValue;
+    } else {
+        oldObject[newKey] = newValue;
+    }
+    return oldObject;
+}
+
+
+const oldObject = { 1: 10, 2: 20, 3: 30 };
+const newObject = { 2: 15 };
+
+const updatedObject = updateObject(oldObject, newObject);
+console.log(updatedObject);

lectures/lec5/p3/task3.js

@@ -0,0 +1,15 @@
+let objGoods = {
+    "ручка": [100, 50.60],
+    "карандаш": [120, 30.00],
+    "тетрадь": [200, 10.50]
+};
+
+outArr = [];
+Object.entries(objGoods).forEach((entry) => {
+    let name = entry[0];
+    entry[1].forEach(price => {
+        outArr.push({ "name": name, amount: price })
+    })
+});
+
+console.log(outArr);

lectures/lec5/p3/task4.js

@@ -0,0 +1,11 @@
+let items = {
+    'ручка': 20,
+    'альбом': 16,
+    'тетрадь': 10
+};
+
+let entries = Object.entries(items);
+entries.sort((a,b) => Number(a[1])-Number(b[1]));
+items=Object.fromEntries(entries)
+
+console.log(items);