belaid.daliomar@gmail.com
2 years ago
parent
577248d404
commit
90ed8ef4df
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// this is your main.js script
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// this is your main.js script
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//exercice level 1
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//ex 01
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let firstName = 'Belaid';
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let lastName = 'DALI OMAR';
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let country = 'Algeria';
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let city = 'Tizi Ouzou';
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let age = 30;
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let isMarried = false;
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let year = 1993;
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console.log(typeof(firstName)); //string
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console.log(typeof(lastName)); //string
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console.log(typeof(country)); //string
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console.log(typeof(city)); //string
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console.log(typeof(age)); //number
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console.log(typeof(isMarried)); //boolean
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console.log(typeof(year)); //number
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//exo 02
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console.log('10' == 10); //true
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//exo 03
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let l = parseInt('9.8');
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console.log(a == 10); //False
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//exo 04
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//Truthy values:
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let truthyValue = 42;
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let truthyString = "Hello, world!";
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let truthyArray = [1, 2, 3];
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// Falsy values:
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let falsyValue = 0;
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let falsyString = "";
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let falsyNull = null;
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//exo 05
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console.log(4>3); //true
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console.log(4>=3); //true
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console.log(4<3); //false
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console.log(4 == 4); //true
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console.log(4 === 4); //true
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console.log(4 != 4); //False
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console.log(4 !== 4); //false
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console.log(4 != '4'); //false
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console.log(4 == '4'); //true
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console.log(4 === '4'); //false
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const pythonLength = "python".length;
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const jargonLength = "jargon".length;
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const isFalsyComparison = pythonLength === jargonLength ? "Falsy" : "Not Falsy";
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console.log(isFalsyComparison);
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//exo 06
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console.log(4 > 3 && 10 < 12); //true
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console.log(4 > 3 && 10 > 12); //false
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console.log(4 > 3 || 10 < 12); //true
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console.log(4 > 3 || 10 > 12); //true
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console.log(!(4 > 3)); //false
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console.log(!(4 < 3)); //true
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console.log(!(false)); //true
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console.log(!(4 > 3 && 10 < 12)); //false
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console.log(!(4 > 3 && 10 > 12)); //true
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console.log(!(4 === '4')); //true
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const str1 = 'python';
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const str2 = 'dragon';
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const isFalsyVal = str1.includes('on') || str2.includes('on') ? true : false;
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console.log(isFalsyVal); //true
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//exo 07
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const time = new Date();
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console.log(time); //Wed Aug 23 2023 10:39:33 GMT+0100 (Central European Standard Time)
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console.log(time.getFullYear()); // 2023
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console.log(time.getMonth() + 1); // 7
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console.log(time.getDate()); // 23
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console.log(time.getDay()); // 3
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console.log(time.getHours()); // 10
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console.log(time.getMinutes()); // 39
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console.log(time.getTime()); // 1692783573531 seconds since January 1, 1970 00:00:00 GMT to 10:39:33 GMT
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//Exercice level 02
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//exo 01
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const base = parseFloat(prompt('Enter base:'));
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const h = parseFloat(prompt('Enter Height:'));
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let area = 0.5*base*h;
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console.log(`the area is ${area}`); // 100
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// exo 02
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let a = parseFloat(prompt('Enter side a:'));
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let b = parseFloat(prompt('Enter side b:'));
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let c = parseFloat(prompt('Enter side c:'));
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let p = a+b+c;
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console.log(`the perimeter is ${p}`); //12
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//exo 03
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let length = parseFloat(prompt('Enter L: '));
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let width = parseFloat(prompt('Enter W: '));
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let areas = length * width;
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let perimeter = 2*(length+width);
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console.log(`the perimeter is ${perimeter}`); //
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console.log(`the area is ${areas}`); //
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//exo 04
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let r = parseFloat(prompt('Enter L: '));
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const Pi = 3.14;
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let ar = r * r * Pi;
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let per= 2*Pi*r;
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console.log(`the perimeter is ${per}`); //
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console.log(`the area is ${ar}`); //
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//ex 05
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// Equation: y = 2x - 2
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// Slope (m) is the coefficient of x
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const slope = 2;
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// x-intercept: When y = 0
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// 0 = 2x - 2
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// 2x = 2
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// x = 1
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const xIntercept = 1;
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// y-intercept: When x = 0
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const yIntercept = -2;
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console.log(`Slope (m): ${slope}`);
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console.log(`x-intercept: (${xIntercept}, 0)`);//(1,0)
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console.log(`y-intercept: (0, ${yIntercept})`);//(0,-2)
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//EXO 06
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// Points
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const x1 = 2;
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const y1 = 2;
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const x2 = 6;
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const y2 = 10;
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// Calculate the slope
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const slopes = (y2 - y1) / (x2 - x1);
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console.log(`The slope between (${x1}, ${y1}) and (${x2}, ${y2}) is ${slopes}`);//2
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//exo 07
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// Equation: y = 2x - 2
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// Given points
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const x1 = 2;
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const y1 = 2;
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const x2 = 6;
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const y2 = 10;
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// Calculate the slope for the equation y = 2x - 2
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const equationSlope = 2;
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// Calculate the slope between the two points
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const pointSlope = (y2 - y1) / (x2 - x1);
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// Compare the slopes using ternary operator
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const comparisonResult = equationSlope === pointSlope ? "Equal" : "Not Equal";
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console.log(`Slope of y = 2x - 2: ${equationSlope}`);//Slope of y = 2x -2: 2
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console.log(`Slope between (${x1}, ${y1}) and (${x2}, ${y2}): ${pointSlope}`);//slope between (2,2) and (6,10): 2
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console.log(`Comparison result: Slopes are ${comparisonResult}`);// comparison result: Slopes are Equal
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//Exo 08
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// Equation: y = x^2 + 6x + 9
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// Given equation coefficients
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const a = 1;
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const b = 6;
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const c = 9;
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// Calculate the discriminant
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const discriminant = Math.sqrt(b * b - 4 * a * c);
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// Calculate the two possible x values when y is 0
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const x1 = (-b + discriminant) / (2 * a);
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const x2 = (-b - discriminant) / (2 * a);
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console.log(`x1: ${x1}`);//-3
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console.log(`x2: ${x2}`);//-3
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//exo 09
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let hours = parseFloat(prompt('Enter Hour'));
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let rateHr = parseFloat(prompt('Enter rate per hour'));
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const salary = hours * rateHr;
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console.log(`Your weekly earning is ${salary}`);//Your weekly earning is 1120
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//exo 10
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const name = 'Belaid';
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let L = name.length;
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(L > 7)
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? console.log('my name is long')
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: console.log('my name is short')
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//my name is short
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//exo 11
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let firstName = 'Belaid';
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let lastName = 'DALI OMAR';
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(length.firstName > length.lastName)
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? console.log(`my first name, ${firstName} is longer than my family name, ${lastName}`)
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: console.log(`my last name, ${lastName} is longer than my first name, ${firstName}`)
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//my last name, DALI OMAR is longer than my first name, Belaid
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//exo 12
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let myAge = 30;
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let yourAge = 32;
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console.log(`you are ${yourAge - myAge} years older than me`);
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// you are 2 years older than me
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//exo 13
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let birthYear = parseInt(prompt('Enter your birth year'));
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let ages = 2023 - birthYear;
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(ages>18)
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? console.log(`you are ${ages}. You are old enough to drive`)
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: console.log(`you are ${ages}. You will not be allowed to drive`);
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//you are 29. You are old enough to drive
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//exo 14
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let yrs = parseInt(prompt('Enter number of years you live'));
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const live = new Date();
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console.log(`you lived ${live.getTime()} seconds`);
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//you lived 1692797539157 seconds
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//exo 15
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const now = new Date();
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const years = now.getFullYear(); // return year
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const month = now.getMonth() + 1; // return month(0 - 11)
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const date = now.getDate(); // return date (1 - 31)
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const Hours = now.getHours(); // return number (0 - 23)
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const minutes = now.getMinutes(); // return number (0 -59)
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console.log(`${years}-${month}-${date} ${Hours}:${minutes}`);
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//2023-8-23 14:38
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console.log(`${date}-${month}-${years} ${Hours}:${minutes}`);
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//23-8-2023 14:38
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console.log(`${date}/${month}/${years} ${Hours}:${minutes}`);
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// 23/8/2023 14:38
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//exercise level 3
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//exo 01
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const months = String(date.getMonth() + 1).padStart(2, '0');
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const day = String(date.getDate()).padStart(2, '0');
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const hourss = String(date.getHours()).padStart(2, '0');
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const Minutes = String(date.getMinutes()).padStart(2, '0');
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console.log(`${years}-${months}-${day} ${hourss}:${Minutes}`);
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