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<!DOCTYPE html> <html> <body> <h1>JavaScript Strings</h1> <h2>The indexOf() Method</h2> <p>indexOf() returns the position of the first occurrence of a value in a string.</p> <p>Find "a":</p> <p id="demo"></p> <script> let text = "Hello world, welcome to the universe."; document.getElementById("demo").innerHTML = text.indexOf("a", 5); </script> </body> </html>
