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<html><head><meta name="viewport" content="width=device-width, initial-scale=1"></head><body><p>Click the button to swap the text of the DIV element:</p><p><button onclick="myFunction()">Click Me</button></p><div id="myDIV">Hello</div><script>function myFunction() { var x = document.getElementById("myDIV"); if (x.innerHTML === "Hello") { x.innerHTML = "Swapped text!"; } else { x.innerHTML = "Hello"; }}</script></body></html>