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mags calculator app / Michael Campbell #73

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8 changes: 4 additions & 4 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="style.css">
<!-- <script src="main.js"></script> -->
<script src="main.js"></script>
<title>Document</title>
</head>
<body>
Expand All @@ -18,9 +18,9 @@
<!-- the "onclick" event listener passes its element's "id" to the "changeOperation" function in the main.js file -->
<button type="button" name="add" id="addition" onclick="changeOperation(this.id)">Add</button>
<button type="button" name="subtract" id="subtraction" onclick="changeOperation(this.id)">Subtract</button>
<button type="button" name="multiply" id="multiplication">Multiply</button>
<button type="button" name="divide" id="division">Divide</button>
<button type="button" name="modulus" id="modulus">Modulus</button>
<button type="button" name="multiply" id="multiplication" onclick="changeOperation(this.id)">Multiply</button>
<button type="button" name="divide" id="division" onclick="changeOperation(this.id)">Divide</button>
<button type="button" name="modulus" id="modulus"onclick="changeOperation(this.id)">Modulus</button>
</div>
<br>
<!-- this "onclick" calls the "equal" function in the main.js file -->
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30 changes: 25 additions & 5 deletions main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -32,13 +32,26 @@ const subtract = (numA, numB) => {
const multiply = (numA, numB) => {
// * to get a product then return it
// Open up the inspector tool in Chrome and select the Console tab to see what this functions is "logging out" to the console.
const multiply = numA * numB
console.log(numA, numB)
return multiply

}

const divide = null

const divide = (numA, numB) => {
const divide = numA / numB
console.log(numA, numB)
return divide
// / to get a quotient,
}
const modulus = (numA, numB) => {
const modulus = numA % numB
console.log(numA, numB)
return modulus

}

const modulus = null
// and % to get a remainder.

// This function changes the "operation" variable to be equal to the "id" of the button we choose on the web page.
Expand All @@ -59,16 +72,23 @@ const putResultInElement = (operationResults) => {

// The function uses the value of "operation" variable to determine which operation function it should use on the number: add, subtract, multiply, divide, or modulus
const equals = () => {
if (!firstNum) {
firstNum = parseInt(document.getElementById('first-Number').value)
}
if (!secondNum){
secondNum = parseInt(document.getElementById('second-Number').value)
}

switch (operation) {
case "addition": putResultInElement(add(firstNum, secondNum))
break;
case "subtraction": putResultInElement(subtract(firstNum, secondNum))
break;
case "multiplication": multiply(firstNum, secondNum)
case "multiplication": putResultInElement(multiply(firstNum, secondNum))
break;
case "division": console.log(divide(firstNum, secondNum))
case "division": putResultInElement(divide(firstNum, secondNum))
break;
case "modulus": console.log(modulus(firstNum, secondNum))
case "modulus": putResultInElement(modulus(firstNum, secondNum))
break;
default: "Choose an operation"
}
Expand Down