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River smith #1

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4c0cf5c
forgot to fork;/ Function done
rivyyriv Apr 28, 2020
12f3ede
Complete (mostly)
rivyyriv Apr 29, 2020
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77 changes: 75 additions & 2 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,13 @@

// 🏡 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 interestRate = 0.05;
let years = 30;
let name = "River" ;



Expand All @@ -13,14 +19,30 @@

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.
*/
let monthlyInterestRate = interestRate / 12;
/*


Create another variable called `periods` and give it the value of years*12.

*/

let periods = 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.
*/

let numerator = Math.pow(monthlyInterestRate + 1, periods) * monthlyInterestRate;

let denominator = Math.pow(monthlyInterestRate + 1, periods) -1;

let monthlyRate = numerator / denominator * principal;

/*


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

Expand All @@ -36,9 +58,31 @@ When your math is correct, monthlyRate will equal 1073.64
/* 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}"

If your name is `Oscar` mortgageCalculator() should return "Oscar, your monthly rate is 1073.64"

*/
function mortgageCalculator(principal, interestRate, years, Name, creditScore){

if (creditScore > 740) {
interestRate = interestRate * 0.95;
}
else if (creditScore < 660) {
interestRate = interestRate * 1.05;
}


let monthlyInterestRate = interestRate / 12;

let periods = years * 12;

let numerator = Math.pow(monthlyInterestRate + 1, periods) * monthlyInterestRate;

let denominator = Math.pow(monthlyInterestRate + 1, periods) -1;

let monthlyRate = numerator / denominator * principal;

return Name +", your monthly rate is " + monthlyRate;
}




Expand All @@ -49,6 +93,7 @@ For example,
mortgageCalculator(2000000, 0.05, 30); <-- should return 1,073.64
*/

/*Done on line 62-*/



Expand All @@ -59,6 +104,8 @@ mortgageCalculator(2000000, 0.05, 30); <-- should return 1,073.64
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.
*/

/*Done on line 62-*/




Expand All @@ -77,8 +124,34 @@ For example, variableInterestRate(200000, 0.04, 30) should console.log:
"{Name}, with an interest rate of 0.055, your monthly rate is $1136"
"{Name}, with an interest rate of 0.06, your monthly rate is $1199"
*/
function variableInterestRate(principal, interestRate, years, Name, creditScore){

if (creditScore > 740) {
interestRate = interestRate * 0.95;
}
else if (creditScore < 660) {
interestRate = interestRate * 1.05;
}

for(let i = monthlyInterestRate; i < i + .05; i += 0.005){


let monthlyInterestRate = interestRate / 12 + i;

let periods = years * 12;

let numerator = Math.pow(monthlyInterestRate + 1, periods) * monthlyInterestRate;

let denominator = Math.pow(monthlyInterestRate + 1, periods) -1;

let monthlyRate = numerator / denominator * principal;

console.log(Name +", with an interest rate of " + interestRate + " your monthly rate is " + monthlyRate);
}



}


// 🌟🌟🌟 STRETCH 🌟🌟🌟//
Expand Down