How to write javascript code for content place holder in master pages?& how to acess those controls in java script?

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How to write javascript code for content place holder in master pages? how to acess those controls in java script?

Actually i have a master page(ex master1.master) and in this i have a content place holder with two controls like checkbox and a textbox.

My reqirement is when i check a checkbox the textbox must disable and when unchecked ,textbox must enable.

so, i need a java script code to do this.

Posted 23-Jun-10 0:59am

gowthamguptha

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Prakash.LE · Answer 1 · 2010-06-23T02:44:00

Hi,

Its very simple. Follow the steps which will solve ur problem.

Step1: In ur master page write the following javascript function:

function EnableDisableTextBox(CheckBoxClientId,TextBoxClientId)
{
var chkBox = document.getElementById(CheckBoxClientId);
if(chkBox && document.getElementById(TextBoxClientId))
{
if(chkBox.checked)
document.getElementById(TextBoxClientId).disabled = true;
else
document.getElementById(TextBoxClientId).disabled = false;
}
return false;
}

Step:2 In the CodeBehind of ur MasterPage write the following code on page load event.

checkbox.Attributes.Add("onclick","EnableDisableTextBox('" + checkbox.ClientID + "','" + textBox.ClientID + "')");

Try to execute and check. Even while click of the checkbox it will not postback also. The enable and disable will be done at client level. Try this:thumbsup: