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30-Days-Of-JavaScript
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I have completed the day 05 so far, rich content, loved it

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pull/842/head
belaid.daliomar@gmail.com 2 years ago
parent d157bdc6b5
commit f727fbcc48
3 changed files with 246 additions and 1 deletions
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41
05_Day_Arrays/05_day_starter/data/countries.js
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@ -193,3 +193,44 @@ const countries = [
'Zambia',
'Zimbabwe'
]
const isEthiopia = countries.includes('Ethopia');
if(isEthiopia){
console.log('Ethiopia');
} else {
countries.push('Ethiopia');
console.log(countries);
}
const firstTenCountries = countries.slice(0, 10);
console.log(firstTenCountries);
//['Afghanistan', 'Albania', 'Algeria', 'Andorra', 'Angola', 'Antigua and Barbuda', 'Argentina', 'Armenia', 'Australia', 'Austria']
const middleIndex = Math.floor(countries.length / 2);
if (countries.length % 2 === 1) {
// If the array has an odd number of countries
const middleCountry = countries[middleIndex];
console.log('Middle Country (Odd):', middleCountry);
} else {
// If the array has an even number of countries
const middleCountry1 = countries[middleIndex - 1];
const middleCountry2 = countries[middleIndex];
console.log('Middle Countries (Even):', middleCountry1, middleCountry2);
}
let firstHalf;
let secondHalf;
if(countries.length % 2 === 0) {
firstHalf = countries.slice(0, middleIndex);
secondHalf = countries.slice(middleIndex);
} else {
firstHalf = countries.slice(0, middleIndex+1);
secondHalf = countries.slice(middleIndex + 1);
}
console.log('First Half:', firstHalf);
console.log('Second Half:', secondHalf);

19
05_Day_Arrays/05_day_starter/data/webtechs.js
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@ -0,0 +1,19 @@
const webTechs = [
'HTML', 'CSS', 'JavaScript', 'React', 'Node',
'PHP', 'EastJS', 'SQL', 'SASS', 'AngolaJS'
]
const isSass = webTechs.includes('SASS');
if (isSass) {
console.log('SASS is a CSS preprocessor');
} else {
webTechs.push('SASS');
console.log(webTechs);
}
//exo 6
const frontEnd = ['HTML', 'CSS', 'JS', 'React', 'Redux']
const backEnd = ['Node','Express', 'MongoDB']
const fullStack = frontEnd.concat(backEnd);
console.log(fullStack);

185
05_Day_Arrays/05_day_starter/scripts/main.js
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@ -1,3 +1,188 @@
console.log(countries)
alert('Open the browser console whenever you work on JavaScript')
alert('Open the console and check if the countries has been loaded')
//Exo level 01
const countries = [
'Albania',
'Bolivia',
'Canada',
'Denmark',
'Ethiopia',
'Finland',
'Germany',
'Hungary',
'Ireland',
'Japan',
'Kenya'
]
const webTechs = [
'HTML',
'CSS',
'JavaScript',
'React',
'Redux',
'Node',
'MongoDB'
]
//exo 01
const arr = new Array();
console.log(arr);
//exo 02
const arr2 = [1,1,2,3,4,5,6,7,8,9,10,11];
console.log(arr2.length);// 12
//exo 04
console.log(arr2[0]); //1
console.log(arr2[5]); //6
console.log(arr2[arr2.length - 1 ]); //11
//exo 05
const mixwsDataTypes = [1, 'amount', 'q',34, true];
//exo 06
let itCompanies = ['Facebook', 'Google', 'Microsoft', 'Apple', 'IBM', 'Oracle', 'Amazon'];
console.log(itCompanies.length);
//(6) ['Facebook', 'Google', 'Microsoft', 'Apple', 'IBM', 'Oracle', 'Amazon']
console.log(itCompanies.length);//7
console.log(itCompanies[0]);//Facebook
const middleIndex = Math.floor(itCompanies.length/2);
console.log(itCompanies[middleIndex]);//Apple
console.log(itCompanies[itCompanies.length - 1]);//Amazon
console.log(itCompanies[0]);
console.log(itCompanies[0]);
console.log(itCompanies[1]);
console.log(itCompanies[2]);
console.log(itCompanies[3]);
console.log(itCompanies[4]);
console.log(itCompanies[5]);
console.log(itCompanies[6]);
console.log(itCompanies[0].toUpperCase());
console.log(itCompanies[1].toUpperCase());
console.log(itCompanies[2].toUpperCase());
console.log(itCompanies[3].toUpperCase());
console.log(itCompanies[4].toUpperCase());
console.log(itCompanies[5].toUpperCase());
console.log(itCompanies[6].toUpperCase());
console.log(itCompanies.join());
//
const companyToFind = prompt('Enter a company:');
const companyExists = itCompanies.includes(companyToFind);
companyExists ? console.log(`${companyToFind} already exists`) : console.log(`${companyToFind} not found`);
//
const itCompanies = ["Facebook", "Google", "Microsoft", "Apple", "IBM", "Oracle", "Amazon"];
// Iterate through each company and count the 'o' occurrences
console.log("Companies with more than one 'o':");
if (itCompanies[0].toLowerCase().split('o').length - 1 > 1) {
console.log(itCompanies[0]);
}
if (itCompanies[1].toLowerCase().split('o').length - 1 > 1) {
console.log(itCompanies[1]);
}
if (itCompanies[2].toLowerCase().split('o').length - 1 > 1) {
console.log(itCompanies[2]);
}
if (itCompanies[3].toLowerCase().split('o').length - 1 > 1) {
console.log(itCompanies[3]);
}
if (itCompanies[4].toLowerCase().split('o').length - 1 > 1) {
console.log(itCompanies[4]);
}
if (itCompanies[5].toLowerCase().split('o').length - 1 > 1) {
console.log(itCompanies[5]);
}
if (itCompanies[6].toLowerCase().split('o').length - 1 > 1) {
console.log(itCompanies[6]);
}
//
itCompanies.sort();
itCompanies.reverse();
itCompanies.slice(0, 3);
itCompanies.slice(-3);//['IBM', 'Oracle', 'Amazon']
itCompanies.shift();//'Facebook'
const itCompanies = ["Facebook", "Google", "Microsoft", "Apple", "IBM", "Oracle", "Amazon"];
const middleIndex = Math.floor(itCompanies.length / 2);
const numberOfCompaniesToSlice = itCompanies.length % 2 === 0 ? 2 : 1; // 1 for odd length, 2 for even length
const middleCompanies = itCompanies.slice(middleIndex, middleIndex + numberOfCompaniesToSlice);
console.log("Middle company(s):", middleCompanies);
itCompanies.splice(middleCompanies, middleIndex+numberOfCompaniesToSlice);
itCompanies.pop();
itCompanies.splice();//[]
//exercice level 02
//exo 01
let text = 'I love teaching and empowering people. I teach HTML, CSS, JS, React, Python.'
const sanitizedText = text.replace(/[.,]/g, '');
const wordsArray = sanitizedText.split(' ');
console.log(wordsArray);
console.log(wordsArray.length);
//exo 02
const shoppingCart = ['Milk', 'coffee', 'tea', 'Honey'];
shoppingCart.unshift('meat');
console.log(shoppingCart);//['meat','Milk', 'coffee', 'tea', 'Honey']
shoppingCart.push('sugar');//['meat','Milk', 'coffee', 'tea', 'Honey', 'sugar']
shoppingCart.splice(4, 1);
console.log(shoppingCart);// ['meat', 'Milk', 'coffee', 'tea', 'sugar']
shoppingCart[3]='green tea';
console.log(shoppingCart);//['meat', 'Milk', 'coffee', 'green tea', 'sugar']
//exercice level 03
//exo 01
const ages = [19, 22, 19, 24, 20, 25, 26, 24, 25, 24];
const arrangedArray = ages.sort();
console.log(arrangedArray);
const min = arrangedArray[0];
const max = arrangedArray[ages.length - 1];
const medianAge = Math.floor(arrangedArray.length / 2);
if(ages.length % 2 == 0) {
//if the array has an even number of values
const medianVal1 = arrangedArray[medianAge -1];
const medianVal2 = arrangedArray[medianAge];
const median = (medianVal1 + medianVal2)/2;
console.log('median age is:', median);
} else {
//if the array has an odd number of values
const median = arrangedArray[medianAge];
}//24
const sumOfAges = ages.reduce((sum, age) => sum + age, 0);
const averageAge = sumOfAges / ages.length;
console.log('average age is:', averageAge);//22.8
const minAge = Math.min(...ages);
const maxAge = Math.max(...ages);
const ageRange = maxAge - minAge;
console.log('min age range is:', minAge, 'max age range is:', maxAge, 'age range is:', ageRange);
const minDiff = Math.abs(minAge - averageAge);
const maxDiff = Math.abs(maxAge - averageAge);
console.log('min diff is:', minDiff, 'max diff is:',maxDiff);
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