Issue-1 solved

1-js-basics/solution.md

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+## Data Types - Practice
+```
+For building a shopping cart, I would make use of the following data types:
+```
+* Numbers : Integers  for the indices/serial nos. and floating point numbers for the prices of items. 
+
+* Strings : Will use them for containing the names of all products.
+
+* Arrays : To store the list of products currently picked by the customer. 
+
+* Objects : To store the data that's related to a customer. 
+
+* Booleans : To display when the cart is empty and when it is not. 
+
+<br>
+
+## Functions & Methods
+```
+Challenge (Articulate the difference between functions and methods) : 
+```
+* Functions are standalone ie, they could be called independently. But methods are parts of objects and can not be called independently.
+
+<br>
+
+```
+Assignment: 
+
+function greetNoReturn() {
+console.log("Hey there!");
+}
+function greetReturn() {
+  return "Hey there";
+}
+function greetParams(first, second) {
+  return `Hey there ${first} ${second}`;
+}
+function greetDefaultParam(first, second, greet = "Welcome") {
+  return `${greet} to the club, ${first} ${second}`;
+}
+let fatArrowFunc = () => {
+  console.log("Aren't you tired of hellos ?");
+}
+
+greetNoReturn();
+let w = greetReturn();
+let x = greetParams("Rohith", "A P");
+let y = greetDefaultParam("Rohith", "A P");
+let z = greetDefaultParam("Rohith", "A P", "Hello! welcome");
+
+console.log(x);
+console.log(y);
+console.log(z);
+fatArrowFunc();
+```
+
+<br>
+
+## Making Decisions
+
+```
+Challenge: 
+
+// Using logical operators
+let progress = "Completed Praveshan"
+let sem = 2;
+if (progress === "Completed Praveshan" && sem <= 3){
+    console.log("Congrats, You are eligible for the interview!");
+} else{
+    console.log("Better luck next time!")
+}
+
+// Using ternary operator
+let eligibility = (progress === "Completed Praveshan" && sem <= 3) ? "Congrats, You are eligible for the interview!" : "Better luck next time!";
+console.log(eligibility);
+```
+I prefer using the ternary operator.
+
+```
+Assignment: 
+
+  let allStudents = ["A", "B-", 1, 4, 5, 2];
+  let studentsWhoPass = [];
+  for (i = 0; i<allStudents.length; i++){
+      if (allStudents[i] >= 3){
+          studentsWhoPass.push(allStudents[i]);
+      }
+      else{
+          if (typeof(allStudents[i]) !== 'number' && allStudents[i]!=="C-"){
+              studentsWhoPass.push(allStudents[i]);
+          }
+      }
+  }
+
+
+```
+
+
+
+<br>
+
+## Loops and Arrays
+
+```
+Challenge: 
+
+  // Using forEach
+  let roles = ["AI", "Web", "DevOps", "Systems"];
+  roles.forEach(role => console.log(`${role} is a great choice!`));
+
+  // Using for-of
+  for (role of roles){
+      console.log(role);
+  }
+
+  // Using map
+  let newRoles = roles.map(x => x + "!");
+  console.log(newRoles);
+
+  // common array methods
+  roles.push("Android");
+  console.log(roles.sort())
+  roles.splice(roles.length, 0, "Research")
+  console.log(roles.splice(roles.length, 0, "Research"));
+```
+
+<br>
+
+```
+Assignment: 
+
+  for (i=1; i<=20; i+=3){
+    console.log(i);
+  }
+```
+
+