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JavaScript实现点击按钮弹出输入框，点确定后添加li组件到ul组件里

JavaScript实现点击按钮弹出输入框，点确定后添加li组件到ul组件里

<!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>

 

posted @ 2015-11-20 23:21  smileNicky  阅读(1003)  评论(0)  编辑  收藏  举报