Toggle Add Remove Class

document.querySelectorAll('.dihitung').forEach((item, index) => { // here
			  item.addEventListener('click', arrow => {
if(this.parentNode.classList.contains('dihitung')==true){
	this.parentNode.classList.remove('dihitung')
	this.cellsΏ].value = this.cellsΏ].value - this.cellsΐ].replace(/\./g,'')
	//this.parentNode.style.backgroundColor = ''
}else{
	this.parentNode.classList.add('dihitung')
	this.cellsΏ].value = this.cellsΏ].value + this.cellsΐ].replace(/\./g,'')
}
})