If i want to tell e=any elements of Array c what function can i use?

Question

var a =confirm ("are you curious? if yes tap ok " );
if (a==true ){
alert ("ok done you can ask me you \'what is\'question ");
}else {
alert ("oh!you should be a curious student ");}
var b=prompt ("ask your what's question here -- \n what is --", "");
var c =new Array (" cat "," bat");
var e=c;
if (b==e){
alert ("animal is a creature ");

Answer 1

Rinku Das i didn't remember the difference myself so i searched it, this is the answer,

function loop() {

for (var i = 0; i < 5; i++) {
//
}

console.log(i) // 5
// i'm accessing i after for loop has ended, it would still work coz it is var, and var is function scoped, so you can access it anywhere after it is declared inside the function, but let is block scoped. Using the same example but with let, you won't be able to access i after the loop coz it was declared just for that block.
}

Using let:
for(let i = 0; i < 5; i++){
//
}
console.log(i); // i is undefined

Learnt it from this video, you can check it out for better understanding, https://youtu.be/XgSjoHgy3Rk

Answer 2

ohk, look, if theres an array

let a = [ 1, 2, 3, 4, 5 ]

and you wanna see that if that array has 4 inside it or not, you can do,

if (a.includes(4)){
console.log("Yeah 4 is there")
} else {
console.log("4 is not there")
}

Answer 3

if c.includes(e) would tell you that if e is equal to any element inside array c, if that's what you're asking.

You can also use "some" function to which returns true even if a single item in the array passes the checks

let result = c.some(item => item === c)

Answer 4

Friend can you give me example

Answer 5

V.v.v.v.v. thanks you brother ...
You help me a lot ..................
Can you tell me the different between var and let !!!!

Answer 6

I can not understood still