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<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>