Animation typing with vanila javascript

let myText = ["Webdeveloper", "React Developer"]; //my input text
let count = 0; //initially  count is 0 it will trace the input text index number
let currentText = ''; //here my current text will store
let strIndx = 0; //it will track the slice part of string index
let arrayTrack = 0; //this will tract the array ittaration so that if the array is empty auto call function will stop
let trackTheElement = 1 //to execute the reverse split of string index number
let loop = true //do the loop running or run only one time.if true then loop will running and if false then loop will run only one time
// let sliceOfString = myText[0].split("")[0]
let sliceOfString
const hello =  () => {
    currentText = myText[count]  //store the current text
    let currentTextLength = currentText.length //store the current text length
    if(currentTextLength >= trackTheElement){ //check the current text is greater than track element or not
            sliceOfString =  currentText.slice(0, ++strIndx) //slice one by one string incremently
            if(myText.length >= count + 1 ){  //check the main input text array length is greter and equal to the count number
                trackTheElement++
            }
            console.log(sliceOfString);
    }else if(currentTextLength < trackTheElement){
        sliceOfString =  currentText.slice(0, --strIndx) //slice one by one string decremently
            if(myText.length >= count + 1 ){ //check the main input text array length is greter and equal to the count number
                if(sliceOfString.length == 0){ //if the slice string's length is zero then it will execute to continue another text and did the same animation
                    count++
                    strIndx = 0
                    trackTheElement = 0
                    arrayTrack++
                    if(myText.length == count && sliceOfString.length == 0 ){ //for continue the loop start from the begging
                        count = 0
                    }
                }
                trackTheElement++
                // console.log(sliceOfString);
            }
            console.log(sliceOfString);
    }

    // call the function part
    if(arrayTrack <= myText.length - 1){
        setTimeout(() => hello(), 350)
    }else{
        loop && setTimeout(() => hello(), 350)  //if the loop is true then it will looping these process
    }

};
hello()