Exercise for array � Lecture 24 � Javascript

Notes of this Lecture:

[princyjain]

In making the array of all the names:
We can also do this -->
let names = [ ];
for (const ch of characters) {
let name = ch.name;
names.push(name);
}
console.log(names);

[banglabeastfr]

You are just awesome bro. I can't stop seeing your video until it ends.

[akashbharti]

Bhaiya I started book reading with Bhagwad Geeta!!

[Miss_Informative]

Sir please complete this web development course asap🥺❤️

[techologyy]

const characters =[
{name:'John', gender:"Male", mass:123},
{name:'Johnathon', gender:"Male", mass:134},
{name:'Ken', gender:"Male", mass:67},
{name:'Jenny', gender:"Female", mass:56}
]
//get an array of all names.
const names =characters.map(function({name}, index, array){
return name;
})
console.log(names)

[abdullahazhar]

Thankyou Bhai❤ Lots of Love from Jhelum, Punjab Pakistan ❤

[adityasinha]

With this speed of video upload. When this playlist will be completed??

[Aman-zpoh]

I have a doubt in the question "characters with mass greater than 100"
Here in solution
character.mass a string, so why we are not converting it into number ?

[ishitamittal]

const characters = [
{
name: 'Tarak Mehta',
height: '172',
mass: '77',
eye_color: 'brown',
gender: 'male',
},
{
name: 'Jethalal',
height: '145',
mass: '136',
eye_color: 'black',
gender: 'male',
},
{
name: 'Babita ji',
height: '150',
mass: '49',
eye_color: 'grey',
gender: 'female',
},
{
name: 'Krishan Iyer',
height: '168',
mass: '84',
eye_color: 'black',
gender: 'male',
},
];
//Get an array of all names
const
console.log(names);

// Get an array of objects with just name and height properties
const => {
return {name: ch.name, height: ch.height}
})
console.log(propertiesOfCh);

//Get the total height of all characters
const totalHeight=characters.reduce((prevHeight, character) => {
return prevHeight + Number(character.height);
}, 0)
console.log(totalHeight);

//Get characters with mass greater than 100
const greaterThanMass = characters.filter((ch) => {
return ch.mass > 100;
})

console.log('\n');

// Get all male characters
const maleCh=characters.filter((ch) => {
return ch.gender == 'male'
})
console.log(maleCh);
console.log('\n');

//Sort by gender
const sortByGender=characters.sort((character1, character2) => {
if(character1.gender < character2.gender)
{
return -1;
}
if(character1.gender > character2.gender)
{
return 1;
}
return 0;
})
console.log(sortByGender);
console.log('\n');

// Sort by name
const sortByName=characters.sort((character1, character2) => {
if(character1.name < character2.name)
{
return -1;
}
if(character1.name > character2.name)
{
return 1;
}
return 0;
})
console.log(sortByName);
console.log('\n');

//Does every character has mass more than 40
=> {
return character.mass > 40
}))

//Does every character have blue eyes
=> {
return character.eye_color == 'blue'
}))

//Is there atleast one male character
=> {
return character.gender == 'male';
}))

//Is there atleast one character taller than 200?
=> {
character.height > 200
}))

[bishalkumarshaw]

Bhaiya please jaldi se website development ka series complete kar dijiye 🙏🙏🙏🙏

[amjadali-cssi]

great sir G sir G course fast complete kre plz

[ayushlohariwal]

Om Namah Shivaya ("Har Har Mahadev") 2:45

[codewithkaran]

i love your teaching style more then the sraddha didi

[musicplace]

Sir yay javascript frontend development kay lia hai

[Rafique_malik]

I hope you are well. Please tell me when the series of web development will be completed?
Thanks!

[dharmeshvala]

NOTES/SOLUTION OF THIS LECTURE

THANK YOU APNI KAKSHA FOR THE GREAT COURSE ON WEB DEV.

let character = [
{
name : 'Dharmesh',
height : 168,
mass : 68,
eye_color : 'grey',
gender : 'male'
}, {
name : 'Jay',
height : 198,
mass : 88,
eye_color : 'light-grey',
gender : 'male'
}, {
name : 'pragati',
height : 162,
mass : 58,
eye_color : 'grey',
gender : 'female'
}, {
name : 'Aakash',
height : 168,
mass : 68,
eye_color : 'black',
gender : 'male'
}, {
name : 'Yagnesh',
height : 188,
mass : 60,
eye_color : 'blue',
gender : 'male'
}
]

//Get an array of all names
const names = character.map(ch => ch.name )
console.log(names);

// get an array of object with just name and height properties
const prop = character.map(ch => {
return {
name :ch.name,
height : ch.height
}})
console.log(prop)

//get the total height of all character
let temp=0;
let totalheight = character.forEach(ch => {

temp += ch.height

})
console.log(temp)

//using reduce method to reduce -- imp
let theight = character.reduce((prevValue, currheight) => {
return prevValue + currheight.height;

}, 0)
console.log(theight)

//get a character with mass greater than 60
let cmass = character.filter(ch => ch.mass > 60)
console.log(cmass)

//get all male characters
let males = character.filter(ch => ch.gender === 'male')
console.log(males )

//sort by gender
let sortBygender = character.sort((ch1, ch2) =>{
if (ch1.gender < ch2.gender) {
return -1;
}
if (ch1.gender > ch2.gender) {
return 1;
}

// names must be equal
return 0;
})

console.log(sortBygender)

// Does every character have a mass more than 40
let val = character.every(ch => ch.mass > 40)
console.log(val)

let least = character.some(ch => ch.gender === 'male')
console.log(least)

[Asta]

In the question does every character have the mass more than 40, we can use the some() also.

[sankalpagrawal]

total height of charecters kai liye loop use karr sakte hain??
i think it'll be easy

[niteshshankar]

Please add lecture 15 and 16 to playlist.

[harsh_gaming]

bhaiyyya instead of some() we can you every() is it okay ?