Why I Cant Set Visiblitity Property Using Jquery?

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.html code

HTML

<html>
   <head>
      <title>The jQuery Example</title>
	  <link rel="stylesheet" type="text/css" href="css/main.css"/>
      <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
		
      <script type="text/javascript" language="javascript">
   
         $(document).ready(function() {

            $("#out").hover(function(){
               $("#block").animate({ 
				  visibility: "visible",
                  width: "300px",
				  
                  opacity: 0.4,
                  marginLeft: "0.6in",
                  fontSize: "3em", 
                  borderWidth: "10px"
               }, 1500 );
            });
				
            $("#in").hover(function(){
				$("#block").show("scale",1500);
               $("#block").animate({ 
				  visibility: "visible",
                  width: "900px",
				  
                  opacity: 1.0,
                  marginLeft: "0in",
                  fontSize: "100%", 
                  borderWidth: "1px"
               }, 1500 );
            });
         });
      </script>
		
      <style>
         div {background-color:#bca; width:100px; border:1px solid green;}
      </style>
		
   </head>
	
   <body>

      <p>Click on any of the buttons</p>
	
      <button id="out"> Animate Out </button>
      <button id="in"> Animate In</button>
		<!--<img id="in" src="img/bat.jpg"/>
		<img id="out" src="img/bat.jpg"/>-->
      <div id="block"><img src="img/bat.jpg"/></div>
   </body>
	
</html>

.css code

CSS

#block
{
	visibility:hidden;


}

Initially i set the property of div tag "hidden" using css and on image hover effect i want to visible that div tag but the code didn't work ..!!

Posted 9-Jun-15 2:08am

vihangshah

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Kornfeld Eliyahu Peter · Accepted Answer · 2015-06-09T02:29:00

When you run animate in the way you do it does not affect the CSS properties from the CSS rule - they are excluded (you can see that the inline style created after animate does not contain visibility at all)...
What you can do is setting visibility before animate:

JavaScript

$("#block").css({visibility: "visible"}
            ).animate({
            width: "300px",
            opacity: 0.4,
            marginLeft: "0.6in",
            fontSize: "3em",
            borderWidth: "10px"
        }, 1500 );