calculator javascript

1<div class="calculator">
2
3  <input type="text" class="calculator-screen" value="" disabled />
4  
5  <div class="calculator-keys">
6    
7    <button type="button" class="operator" value="+">+</button>
8    <button type="button" class="operator" value="-">-</button>
9    <button type="button" class="operator" value="*">×</button>
10    <button type="button" class="operator" value="/">÷</button>
11
12    <button type="button" value="7">7</button>
13    <button type="button" value="8">8</button>
14    <button type="button" value="9">9</button>
15
16
17    <button type="button" value="4">4</button>
18    <button type="button" value="5">5</button>
19    <button type="button" value="6">6</button>
20
21
22    <button type="button" value="1">1</button>
23    <button type="button" value="2">2</button>
24    <button type="button" value="3">3</button>
25
26
27    <button type="button" value="0">0</button>
28    <button type="button" class="decimal" value=".">.</button>
29    <button type="button" class="all-clear" value="all-clear">AC</button>
30
31    <button type="button" class="equal-sign operator" value="=">=</button>
32
33  </div>
34</div>

1let add =(...params) => {
2    let sum = 0;
3    params.forEach(el =>{
4        sum = sum + parseInt(el);
5    })
6    return sum
7}
8
9document.querySelector('.add').addEventListener('click' , function (e) {
10    const adder = document.querySelector('.addinput').value 
11    const meow = adder.split(',')
12    let result = add(...meow)
13    if (isNaN(result)) {
14        result = 'ENTER A NUMBER'
15    }
16    document.querySelector('.result').textContent = result
17})
18
19let times =(...params) => {
20    let multiply = 1;
21    params.forEach(el =>{
22        multiply = multiply * el;
23    })
24    return multiply
25}
26
27document.querySelector('.multiply').addEventListener('click' , function (e) {
28    const multiplier = document.querySelector('.multiplyinput').value 
29    const moo = multiplier.split(',')
30    let product = times(...moo)
31    if (isNaN(product)) {
32        product = 'ENTER A NUMBER'
33    }
34    document.querySelector('.product').textContent = product
35})
36
37let subtract =(...params) => {
38    let diff = 0;
39   diff = params[0] - params[1]
40    return diff
41}
42
43document.querySelector('.subtract').addEventListener('click' , function (e) {
44    const subtracter = document.querySelector('.subtractinput').value 
45    const woof = subtracter.split(',')
46    let diff = subtract(...woof)
47    if (isNaN(diff)) {
48        diff = 'ENTER A NUMBER'
49    }
50    document.querySelector('.difference').textContent = diff
51})
52
53let divide =(...params) => {
54    let quotient = 0;
55    quotient = params[0] / params[1]
56    return quotient
57}
58
59document.querySelector('.divide').addEventListener('click' , function (e) {
60    const divider = document.querySelector('.divideinput').value 
61    const moo2 = divider.split(',')
62    let quotient = divide(...moo2)
63    if (isNaN(quotient)) {
64        quotient = 'ENTER A NUMBER'
65    }
66    document.querySelector('.quotient').textContent = quotient
67})
68

1class Calculator {
2  constructor(numbers, num1, num2){
3      this.numbers = numbers;
4      this.num1 = num1;
5      this.num2 = num2;
6  }
7
8    add(numbers){
9        var sum = 0;
10
11        for(let i = 0; i < numbers.length; i++){
12            if(typeof numbers[i] === "number"){
13                sum += numbers[i];
14            }
15        }
16
17        return sum;
18    }
19    multiply (numbers) {
20        let total = 1;
21
22        for (let i = 0; i < numbers.length; i++) {
23            if (typeof numbers[i] === 'number')
24            total *= numbers[i]
25        };
26
27        return total;
28    }
29
30    subtract (num1, num2) {
31        return num1 - num2
32    }
33    
34    divide (num1, num2) {
35        return num1 / num2
36    }
37}