python学习之js从0开始

时间：2021-04-07 09:29:46
<html>

<head>

<title>js页面</title>

  <script src="js/old_boy.js"></script>

  <style type="text/css">

      .show{

	  }

      .hide{

	      display:none;

	  }

	  .enter{

	      color:black;

	  }

	  .leave{

	      color:gray;

	  }

  </style>

</head>

<body>

   <div id="t1" class="show">内容</div>

   <input type="button" id = "switch" onclick="hide();" value="隐藏"/>

   <form action="https://www.sogou.com/web?" id="form" method="GET">

       <input type="text" name="query"  />

	   <input type="button"  value="伪提交" onclick="mySubmit();" />

   </form><br/>

   <input type="text" name="leave" value="请输入内容" id="tip" onfocus="enter();" onBlur="leave();"/><br/><br/>

   <div style="border: 1px solid red;width:500px;height:90px" >

       <div style="background-color:green;width:10%;height:100%" id="tipp"></div>

   </div>

   <script type="text/javascript">

       var div = document.getElementById("t1");

	   var button = document.getElementById("switch");

	   div.innerText += "追加内容";

	   function hide(){

		   var className = div.className;

		   if (className == "show"){

		       div.className = "hide";

			   button.setAttribute("value","显示");

		   } else {

		       div.className = "show";

			   button.setAttribute("value","隐藏");

		   }

	       console.log(div.className);

	       /*div.className="hide";

		   console.log(div.className);*/

	   }

	   function mySubmit(){

	        document.getElementById("form").submit();

	   }

	   function enter(){

	       var tip = document.getElementById("tip");

		   if (tip.value == "请输入内容" || tip.value.trim() == ""){

		       tip.className = "enter";

			   tip.value = "";

		   } else {

		       tip.className = "enter";

		   }

	   }

	   function leave(){

	       var tip = document.getElementById("tip");

		   if(tip.value.trim()==""){

		       tip.className = "leave";

			   tip.value = "请输入内容";

		   }

	   }

	   pro = 10;

	   function progTipp(){

	       var prog= document.getElementById("tipp");

		   console.log(prog.style.width);

		   pro = pro + 10;

		   if (pro > 100){

		       clearInterval(interval);

		   } else {

			   prog.style.width = pro +"%";

		   }

	   }

	  interval =  setInterval("progTipp()",500);

   </script>

</body>

</html>

　　

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