CSS Reference

"visibility" - css property (v. css 2)

  • To specify whether or not an element is visible.
  • This property may be used in conjunction with scripts to create dynamic effects.
  • Initial value: visible
  • The property is inherited
  • HTML usage: all elements
  • Browsers that support the visibility - property :
    Internet Explorer Mozilla Firefox Opera Google Chrome Apple Safari

Possible visibility values:

value Comments CSS
visible The generated box is visible. 2
hidden The generated box is invisible (fully transparent), but still affects layout. 2
collapse If used on elements other than rows or columns, 'collapse' has the same meaning as 'hidden'. 2
inherit Will inherit the value from parent specification. 2

Property "visibility" example:

<!DOCTYPE HTML >
<html>
  <head>
    <script type="text/javascript">
      function changeVisible(value) {
        document.getElementById("p1").style.visibility=value;
      }
    </script>
    <style   type="text/css">
      #p1 { width: 300px;
            background-color: #DDDDDD;
      }
    </style>
  </head>
  <body >
    <h1 >CSS Selectors</h1>
    <p id="p1">One of the primary advantages of
      CSSparticularly to designersis its ability to
      easily apply a set of styles to all elements
      of the same type. Unimpressed? Consider this:
      by editing a single line of CSS, you can change
      the colors of all your headings.</p>
    <div>
      <input type="button" onclick="changeVisible('hidden')"
             value="Paragraph to visibility: hidden" /><br/>
      <input type="button" onclick="changeVisible('collapse')"
             value="Paragraph to visibility: collapse" /><br/>
      <input type="button" onclick="changeVisible('inherit')"
             value="Paragraph to visibility: inherit" /><br/>
    </div>
  </body>
</html>

Javascript access:

// To SET values ([o] is the target object)
[o].style.visibility="visibility value"
// To GET values you must first get the computed style object
// To get that object in IE or Opera:
var cStyle=[o].currentStyle;
// To get that object in Firefox, Chrome or Safari (w3c-type):
var cStyle=window.getComputedStyle([o],null)
// To GET the property value:;
var value=cStyle.visibility;
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