The control is invisible when style.display= "block" or style.visibility= "visible", when style.display = "None" or style.visibility = "hidden".
The difference is that "display" not only hides the control, but the hidden control no longer occupies the position used by the display, while the "visibility" hidden control simply sets the control to invisible, and the control still occupies its original position.
<p>
<input id= ' control ' value= "controls you want to hide" >
</p>
<p>
Hides the above control and makes it not occupy the position on the page
<input type= "button" value= ' Hide ' onclick= ' Displayhide_control () ' >
<input type= "button" value= ' Show ' onclick= ' Displayshow_control () ' >
<br/>
Only hides the control, its position still occupies
<input type= "button" value= ' Hide ' onclick= ' Visibilityhide_control () ' >
<input type= "button" value= ' Show ' onclick= ' Visibilityshow_control () ' >
</p>
<script language= "javascript" type= "Text/javascript" >
function Displayhide_control ()
{
var _control = document.getElementById ("control");
_control.style.display= "None";
}
function Displayshow_control ()
{
var _control = document.getElementById ("control");
_control.style.display= "Block";
}
function Visibilityhide_control ()
{
var _control = document.getElementById ("control");
_control.style.visibility= "hidden";
}
function Visibilityshow_control ()
{
var _control = document.getElementById ("control");
_control.style.visibility= "visible";
}
</script>
