JavaScript系列之实现ul动态添加li元素
JavaScript系列之实现ul动态添加li元素
<!doctype html> <html manifest="lab4.manifest"> <head> <title>Mobile Cookbook</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0">
</head> <body > <section> <form id="form1" name="form1" method="post"> <input type="button" name="button" onClick="inputBox();"id="button" value="Add Note" /> <ul id="ul"> <li>metting</li> <li>读书</li> <li>打代码</li> <li>看代码</li> <li>看博客</li> </ul> </form> <div></div> <script language="javascript"> function inputBox() { var str=prompt("您的备忘录^-^",""); if(str!=null&&str!="") { var ul = document.getElementById("ul"); var num = ul.childNodes.length; add(1,str); alert("^-^添加成功,您刚输入的是："+ str) }
} function add(n,str){ var ul = document.getElementById('ul'); var li = document.createElement("li"); var num = ul.childNodes.length; li.innerHTML=str; for(var i=0;i<num;i++){ if(n==-1){ ul.appendChild(li); }else if(i==n-1){ ul.insertBefore(li,ul.childNodes[i]); } } } </script> </section> </body> </html>
腾讯云开发者
