Variable declared but never used error

[pixy2001]

pls help me with this error …I am trying to make a program by my own logic to sort words in alphabetical order in javascript.Here’s my code …its incomplete as I am experiencing an error .I am not able to access i in the forEach method in the very last step idk y …can someone pls help me clear that up??

//sort words in alphabetical order
import readline from “readline-sync”

let string=readline.question(“Enter the words:”)
let asciino=
let lower=
let words=string.split(" ")

words.forEach((x)=>{

lower.push(x.toLowerCase())

})

lower.forEach((x)=>{

asciino.push(x.charCodeAt(0))

})

asciino.sort((a,b)=>a-b)
console.log(asciino)
console.log(lower)
let i=0
lower.forEach((x)={

//while(i<=asciino.length-1){
//    if(x.charCodeAt(0)==asciino[i]){
//    }
//    i++
//}
while(i<=asciino.length-1){//here's the error the i here is showing the error 

//mentioned before
//random code
};
})
console.log(final)

[GeorgeCrisan]

Edit: Just noticed you are new so welcome to the forum.

The problem is the arrow function.

Basically you have an odd assignment there instead of a fat arrow function “=>”. Because the “>” is missing javascript does best it can with it. ''forEach" expects a callback function as a parameter.

lower.forEach((x) = {

you want instead

lower.forEach((x) => {

Is the last forEach I am talking about.

PS:
“final” does not exist. Remove this console.log(final);

Test locally:

Here is the code with the issues resolved:

// sort words in alphabetical order
import readline from 'readline-sync';

let string = readline.question('Enter the words:');
let asciino = [];
let lower = [];
let words = string.split(" ");

words.forEach((x) => {
    lower.push(x.toLowerCase())
});

lower.forEach((x) => {
    asciino.push(x.charCodeAt(0));
});

asciino.sort((a, b) => a - b);
console.log(asciino);
console.log(lower);
let i = 0;

lower.forEach((x) => {

    while (i <= asciino.length - 1) {
        if (x.charCodeAt(0) == asciino[i]) {
            console.log('do something ');
        }
        i++;
    }
    while (i <= asciino.length - 1) {//here's the error the i here is showing the error 
        //mentioned before
        //random code
    };
});

// console.log(final);