De YURII

Казалось бы, ответ очевиден

let fullText = document.querySelector('div.text').textContent;
let buttonText = document.querySelector('div.text button').textContent;
let text = fullText.replace(buttonText, '');

var d=document,c='createElement',e='div',div1=d[c](e),div2=d[c](e),div3=d[c](e),div4=d[c](e),div5=d[c](e);

var div1 = document.createElement('div'),
div2 = div1.cloneNode(),
div3 = div1.cloneNode(),
div4 = div1.cloneNode(),
div5 = div1.cloneNode();

var c='cloneNode',
div1 = document.createElement('div'),
div2 = div1[c](),
div3 = div1[c](),
div4 = div1[c](),
div5 = div1[c]()

var c='cloneNode',d=div1=document.createElement('div'),div2=d[c](),div3=d[c](),div4=d[c](),div5=d[c]()

var d=div1=document.createElement('div'),c=()=>d.cloneNode(),div2=c(),div3=c(),div4=c(),div5=c()

var c=()=>document.createElement('div'),div1=c(),div2=c(),div3=c(),div4=c(),div5=c()

createDiv(5);

function createDiv(n){
	var div = [];
	for(var i = 0; i < n; i++){
		div.push(document.createElement('div'));
	}
	return div;
}