JAVASCRIPT

js inner text

document.getElementById("text").innerText = "Your new text here" 

HTML DOM innerText

var x = document.getElementById("myBtn").innerText;

innertext

document.getElementById("heading").innerText='';

innertext of element js

var text = document.querySelector('#text').innerText; //'#':id '.':class

js get element by innertext

//You could use xpath to accomplish this
var xpath = "//a[text()='SearchingText']";
var matchingElement = document.evaluate(xpath, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;

//You can also search of an element containing some text using this xpath:
var xpath = "//a[contains(text(),'Searching')]";