Day 25: Increment and decrecemt, Object

javascript/Day25/index.js

@@ -0,0 +1,76 @@
+var input = 7;
+var output1 = ++input + ++input + ++input;
+var output2 = input++ + input++ + input++;
+var output3 = input++ + ++input + input++;
+console.log(output1, output2, output3);
+console.log(input);
+// 27,33,43
+//16
+
+var obj = {
+  name: "Utkarsh",
+  age: 23,
+};
+
+var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
+
+var twoDArray = [
+  [1, 2, 3],
+  [4, 3, 5],
+  [6, 6, 10],
+];
+
+arr.push(10);
+arr.push("Utkarsh");
+arr.push(obj);
+arr.push(false);
+
+arr.unshift(0);
+arr.unshift(-1);
+arr.unshift(-2);
+
+var removed_value = arr.pop();
+
+arr.pop();
+
+console.log(arr, removed_value);
+
+arr.shift();
+arr.shift();
+arr.shift();
+
+console.log(arr);
+console.log(arr);
+console.log(arr.length);
+
+var arr = [];
+
+arr.push(1);
+arr.push(2);
+arr.pop();
+arr.unshift(4);
+arr.push(3);
+arr.unshift(5);
+arr.pop();
+arr.shift();
+arr.push(5);
+arr.shift();
+arr.unshift(-1);
+arr.push(8);
+console.log(arr.length, arr);
+//[-1,1,5,8]
+
+var arr = [];
+
+arr[arr.length] = 1;
+
+arr[arr.length] = 2;
+arr[arr.length] = 3;
+arr[arr.length] = 4;
+
+console.log(arr);
+arr[arr.length - 1] = 5;
+
+console.log(arr);
+arr[0] = 9;
+console.log(arr);