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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);

187
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')
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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