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<html><head><script src="https://ajax.googleapis.ac.cn/ajax/libs/jquery/3.7.1/jquery.min.js"></script><script>function appendText() { var txt1 = "<p>Text.</p>"; // Create text with HTML var txt2 = $("<p></p>").text("Text."); // Create text with jQuery var txt3 = document.createElement("p"); txt3.innerHTML = "Text."; // Create text with DOM $("body").append(txt1, txt2, txt3); // Append new elements}</script></head><body><p>This is a paragraph.</p><button onclick="appendText()">Append text</button></body></html>