meth1/math.js

test

function sumUp(...a){
    let sum = 0
    for (const item of a) {
        sum += item
    }
    return sum
}

function subtraction(...a){
    let sub = a[0]
    for (const item of a) {
        sub -= item
    }
    return sub+a[0]
}

function increase(...a){
    let inc = 1
    for (const item of a) {
        inc *= item
    }
    return inc
}

function reduce(...a){
    let red = a[0]
    for (const item of a) {
        red /= item
    }
    return red*a[0]
}

function comparisonMax(...a){
    let max = a[0]
    for (const item of a) {
        if(max<item){
            max = item
        }
    }
    return max
}

function comparisonMin(...a){
    let min = a[0]
    for (const item of a) {
        if(min>item){
            min = item
        }
    }
    return min
}

function middleArithmetic(...a){
    let sum = 0;
    let counter = 0;
    for (const item of a) {
        sum += item;
        counter++
    }
    return sum/counter
}

function mediumGeometric(...a){
    let sum = 1
    let counter = 0
    for (const item of a) {
        sum *= item;
        counter++
    }
    return sum**(1/counter)
}

function isPrime(a){
    let counter = 0;
    for(let i = 0; i<=a; i++){
        if(a%i==0){
            counter++
        }
    }
    if(counter==2){
        return true
    }else{
        return false
    }
}

function primeSum(a){
    let sum = 0;
    for(let i = 0; i<=a; i++){
        let counter = 0;
        for(let j = 0; j<=i; j++){
            if(i%j==0){
                counter++
            }
        }
        if(counter==2){
            sum += i
        }
    }
    return sum
}

function sumTheNumbers(a){
    let counter = 0;
    let sum = 0;
    for(let i = a; i>=1; i/=10){
        counter++
    }
    for(let i = counter; i>=1; i--){
        sum += Math.trunc(a/10**(i-1)%10)
    }
    return sum
}

function nameValidate(name){
    if(!name.value){
        name.style.outlineColor = "red"
        name.focus()
        return false
    }
    if(!name.value.trim()){
        name.style.outlineColor = "red"
        name.focus()
        return false
    }
    return true
}

function ageValidate(age){
    if(!age.value){
        age.style.outlineColor = "red"
        age.focus()
        return false
    }
    if(!Number(age.value)){
        age.style.outlineColor = "red"
        age.focus()
        return false
    }
    return true
}

function emailValidate (email){
    return String(email.value)
      .toLowerCase()
      .match(
        /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|.(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
      ) ? true : false;
};
  
function rendomPassword(){
    const upperCase = "QWERTYUIOPASDFGHJKLZXCVBNM"
    const lowerCase = "qwertyuiopasdfghjklzxcvbnm"
    const number = "1234567890"
    const symbol = "!@#$%^&*()_+=-\][|}{';:><.,/?÷≥≤…æ≠ºª•¶§∞¢£™¡œ∑´®˚¬©ƒ∂ß"
    const all = upperCase + lowerCase + number + symbol
    let password = ""
    for(let i = 1; i<=36; i++){
        password += all[Math.floor(Math.random()*all.length)] 
    }
    return password
}