asked on

DHTML To make a text field appear in a field

I am making a simple form. I want to add a check box that when checked makes a text box appear below it. When unchecked the field disappears.

I know its a simple process but I've seen so many ways to do it I thought I'd ask for a nice tight method. I want the structure to remain in the same form.. so hiding a div etc is likley the method I'm looking for.

TiA

krunal_shah

try the code below,

<%@ Page language="c#" AutoEventWireup="false" %>
<HTML>
<HEAD>
<title>Javascript Show Hide</title>

<script language=javascript>
function showHide(checkbox,textboxId)
{
var textbox = document.getElementById(textboxId);
if(checkbox.checked)
{
textbox.style.display = '';
}
else
{
textbox.style.display = 'none';
}
}
</script>
<script language=C# runat=server>
override protected void OnInit(EventArgs e)
{
chbShowHide.Attributes.Add("onClick",string.Format ("javascript:showHide(this,'{0}');",txtShowHide.ClientID));
base.OnInit(e);
}
</script>
</HEAD>
<body >
<form id="frmShowHide" method="post" runat="server">
<asp:TextBox id="txtShowHide"
runat="server"></asp:TextBox>
<asp:CheckBox id="chbShowHide" Checked=True
runat="server"></asp:CheckBox>
</form>
</body>
</HTML>

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new_to_php

ASKER

Sorry..

I should have mentioned I'm running PHP

I'm looking for a show hide div type DHTML code that fires when the check box is clicked

remorina

Try this
There is no need to server side scripting

krunal_shah

k.. try this,

<INPUT TYPE="checkbox" NAME="switchBox"
onclick="showHideText(this,'myText')">

Next you'll need a div that contains the text you want to show/hide,
like this:

<div ID="myText">Put text here</div>

Then you'll need the javascript function to hide the text, like this:

function showHideText(boxName,divName) {
if(boxName.checked = true) {
document.getElementById(divName).style.display = 'block';
}
else {
document.getElementById(divName).style.display = 'none';
}
}

remorina

<html>
<head>
<title>JS Example</title>
<script type="text/javascript">
    function ShowCtrl(box, el) {
        
        var elem = document.getElementById(el);
        if(box.checked) {
            elem.style.display = '';
        }
        else
        {
            elem.style.display = 'none';
        }
    }

</script>
</head>
<body >
<form id="form">
<input id="checkbox1" type="checkbox" onclick="ShowCtrl(this, 'input1')" />
<br />
<input type="text" id="input1" style="display:none;" />
</form>
</body>
</html>

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new_to_php

ASKER

remorina,

It works but is there a way to encapsulate the label? Like in a div for instance?

ASKER CERTIFIED SOLUTION

remorina

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new_to_php

ASKER

One other question.. is there a way to make it so the div etc doesn't load on refresh? It would be nice if it defaults to hidden

StealthyDev

Dear, this would be the simplest way to do that..

<input type=checkbox checked onclick="txtBox.style.visibility = (this.checked)?'visible':'hidden'">show/hide
<input type=text name=txtBox value="this is the box">

if you still want div to be used? try this:

<input type=checkbox checked onclick="document.getElementById('myBoxContainer').style.visibility = (this.checked)?'visible':'hidden'">show/hide
<span id="myBoxContainer">
<input type=text name=txtBox value="this is the box">
</span>

replace "span" can be replaced to "div" if you compromise line brake.

<input type=checkbox checked onclick="txtBox.style.visibility=(this.checked)?'visible':'hidden'">show/hide
  <input type=text name=txtBox value="this is the box">



<input type=checkbox checked onclick="document.getElementById('myBoxContainer').style.visibility = (this.checked)?'visible':'hidden'">show/hide
  <span id="myBoxContainer">
  <input type=text name=txtBox value="this is the box">
  </span>

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new_to_php

ASKER

Appreciate the follow through senthurpandian

I have it figured out now.. thanks to all..