VickieNelson · VickieNelson · Apr 15, 2020 · Apr 15, 2020 · Apr 16, 2020 · Apr 16, 2020
diff --git a/index.js b/index.js
@@ -1,66 +1,149 @@
-// 🌟🌟🌟 M V P 🌟🌟🌟//
+// // 🌟🌟🌟 M V P 🌟🌟🌟//
 
-// 🏡 Task 1: Variables
-/* Create variables for principal, interest rate, and years. Assign them the values 200000, 0.05, and 30 respectively. Create another value called name and give it the value of your own name.
-*/
+// // 🏡 Task 1: Variables
+// /* Create variables for principal, interest rate, and years. Assign them the values 200000, 0.05, and 30 respectively. Create another value called name and give it the value of your own name.
+// */
 
+let principal = 200000; //let because this value will change as payments are made
+let interestRate = 0.05;
+let years = 30;
+let name = 'Vickie'; //because name may change
 
+// // 🏡 Task 1.5: Simple Math
+// /* To create a monthly mortgage rate calculator, we need to know the number of years in months and the monthly interest rate. 
 
+// Create a variable called `monthlyInterestRate` and give it the value of interest rate divided by 12. 
 
+// Create another variable called `periods` and give it the value of years*12.
+// */
 
-// 🏡 Task 1.5: Simple Math
-/* To create a monthly mortgage rate calculator, we need to know the number of years in months and the monthly interest rate. 
+const monthlyInterestRate = (interestRate/12);
 
-Create a variable called `monthlyInterestRate` and give it the value of interest rate divided by 12. 
+const periods = (years*12);
 
-Create another variable called `periods` and give it the value of years*12.
-*/
 
+// // 🏡 Task 2: Harder Math
+// /* Create your calculator! Use the formula in the ReadMe to run calculations on your numbers. Save the final value into a variable called monthlyRate.
 
+// Hint: while these calculations can be done in one line, it might be helpful to create a variable called "numerator" to calculate the numerator, and another called "denominator" to calculate the denominator 
 
+// Hint #2: you'll need to use the `math` object for parts of this calculation!
 
-// 🏡 Task 2: Harder Math
-/* Create your calculator! Use the formula in the ReadMe to run calculations on your numbers. Save the final value into a variable called monthlyRate.
+// When your math is correct, monthlyRate will equal 1073.64
+// */
 
-Hint: while these calculations can be done in one line, it might be helpful to create a variable called "numerator" to calculate the numerator, and another called "denominator" to calculate the denominator 
+const numerator = monthlyInterestRate*(Math.pow((1+monthlyInterestRate), periods));
 
-Hint #2: you'll need to use the `math` object for parts of this calculation!
+const denominator = ((Math.pow((1+monthlyInterestRate), periods))-1);
 
-When your math is correct, monthlyRate will equal 1073.64
-*/
+const monthlyRate = principal*(numerator/denominator); 
 
+//this is a new function made to calculate mortgage
 
+function mortgageEquate (principal, interestRate, years){
 
+    let monthlyInterestRate = (interestRate/12);
+    let periods = (years*12);
+    const numerator = monthlyInterestRate*(Math.pow((1+monthlyInterestRate), periods));
+    const denominator = ((Math.pow((1+monthlyInterestRate), periods))-1);
+    const monthlypayment = principal*(numerator/denominator); 
 
-// 🏡 Task 3: Function
-/* Create a function called `mortgageCalculator` that combines all of the steps from task 1 and 2 and returns a sentence "{Name}, your monthly rate is ${monthlyRate}"
+    return monthlypayment;
+}
+console.log(mortgageEquate(200000, .05,30));
 
-If your name is `Oscar` mortgageCalculator() should return "Oscar, your monthly rate is 1073.64"
-*/
 
 
 
 
+// // 🏡 Task 3: Function
+// /* Create a function called `mortgageCalculator` that combines all of the steps from task 1 and 2 and returns a sentence "{Name}, your monthly rate is ${monthlyRate}"
 
-// 🏡 Task 4: Arguments and Parameters
-/* Substitute the variables in your functions for parameters such that you can substitute `P`, `I`, and `N` when you call the function.
+// If your name is `Oscar` mortgageCalculator() should return "Oscar, your monthly rate is 1073.64"
+// */
 
-For example,
-mortgageCalculator(2000000, 0.05, 30); <-- should return 1,073.64
-*/
+// //variables used     // the variables    
+//     // let principal = 200000; //let because this value will change as payments are made
+//     // const interestRate = 0.05;
+//     // const years = 30;
+//     // let name = 'Vickie'; //because name may change
+//     // const monthlyInterestRate = (interestRate/12);
+//     // const periods = (years*12);
+//     // const numerator = interestRate*(Math.pow((1+interestRate), periods));
+//     // const denominator = ((Math.pow((1+interestRate), periods))-1);    
+//     // const monthlyRate = principal*(numerator/denominator); 
 
 
+// //creating the function
 
+function mortgageCalculator(){ 
 
+    //(original code not needed as new function was created)
+// const numerator = monthlyInterestRate*(Math.pow((1+monthlyInterestRate), periods));
+// const denominator = ((Math.pow((1+monthlyInterestRate), periods))-1);
+// const monthlyRate = principal*(numerator/denominator); 
 
-// 🏡 Task 5: Conditionals
-/* Add another paramter to your function called credit score. This parameter will be a number between 0 and 800 (a credit score).
+let x = mortgageEquate(principal, interestRate, years);//calls function code from above
 
-Then, add control flow within your function such that IF creditScore is above 740, interest rate drops by 0.5%, if credit score is below 660, interest rate increases by 0.5% and if credit score is anywhere between 660 and 740 interest rate doesn't change.
-*/
+//the console.log return
+ console.log(name+", your monthly rate is "+x); 
+
+//  console.log( "Calcualtor 1" );
+
+ }
+
+
+// //call the function to run code 
+mortgageCalculator();
+
+
+// // 🏡 Task 4: Arguments and Parameters
+// /* Substitute the variables in your functions for parameters such that you can substitute `P`, `I`, and `N` when you call the function.
+
+// For example,
+// mortgageCalculator(2000000, 0.05, 30); <-- should return 1,073.64
+// */
+
+function mortgageCalculator2(P, I, N){ 
+
+let x = mortgageEquate (P, I, N);
+//     //the console.log return
+
+ console.log(name+', your monthly rate is '+x);
+// console.log( "Calculator 2" );
+
+ }
+// //call the function to run code 
+ mortgageCalculator2(200000, 0.05, 20);
+
+
+
+// // 🏡 Task 5: Conditionals
+// /* Add another paramter to your function called credit score. This parameter will be a number between 0 and 800 (a credit score).
+
+// Then, add control flow within your function such that IF creditScore is above 740, interest rate drops by 0.5%, if credit score is below 660, interest rate increases by 0.5% and if credit score is anywhere between 660 and 740 interest rate doesn't change.
+// */
 
+function mortgageCalculator3 (P,I,N,score){
 
+if (score>740 && score<800) {
+    I = (I - .005);
+}
 
+else if (score<660) {
+    I = (I + .005);
+ }
+
+
+// console.log(I);
+//if i was stopping here but... 
+
+//this calculates new payment
+let x = mortgageEquate (P,I,N);
+console.log(name+', your monthly rate is '+x);
+}
+
+mortgageCalculator3 (2000000, 0.05, 30, 700);
 
 // 🏡 Task 6: Loops
 /* Write a new function called variableInterestRate. This function should be the same as mortgageCalculator, except it should console.log the monthly payment for 10 different interest rates at 0.5% increments plus or minus 2% from the inputted interest rate. Complete these calculations using a for loop.
@@ -79,6 +162,33 @@ For example, variableInterestRate(200000, 0.04, 30) should console.log:
 */
 
 
+function variableInterestRate (P,I,N){
+
+    I = I - .02;
+    for (let i = 0; i<10; i++){ 
+
+    let y = mortgageEquate (P,I,N); 
+        I = (I+.005);
+        I = Math.round(I*1000)/1000;
+
+
+console.log(name+', with an interest rate of '+I+', your monthly rate is '+y);
+    }
+}
+
+variableInterestRate (200000, .04, 30);
+
+
+
+
+
+
+
+
+
+
+
+
 
 
 // 🌟🌟🌟 STRETCH 🌟🌟🌟//