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编辑您的代码：
<!DOCTYPE html> <html> <body> <div id="div1"> <p id="p1">This is a paragraph.</p> <p id="p2">This is another paragraph.</p> </div> <script> var parent=document.getElementById("div1"); var child=document.getElementById("p1"); var para=document.createElement("p"); var node=document.createTextNode("This is new."); para.appendChild(node); parent.replaceChild(para,child); </script> </body> </html>
查看结果: