Example

by no2don

HTML

<!-- Learn about this code on MDN: https://developer.mozilla.org/en-US/docs/Web/API/Window/find -->

<p>Apples, Bananas, and Oranges.</p>
<button type="button" onClick='findString("pl")'>Search for Apples</button>
<button type="button" onClick='findString("Banana")'>Search for Banana</button>
<button type="button" onClick='findString("Orange")'>Search for Orange</button>

JavaScript

findString = function findText(text) {
  alert("String \x22" + text + "\x22 found? " + window.find(text));
}