Enable & Disable a Div and its elements in Javascript

Question

I am looking for a method to Enable and Disable the div id="dcalc" and Its children.

<div id="dcalc" class="nerkheArz"
 style="left: 50px; top: 150px; width: 380px; height: 370px;
 background: #CDF; text-align: center" >
 <div class="nerkh-Arz"></div>
 <div id="calc"> </div>
</div>

I want to Disable them at loading the page and then by a click i can enable them ?

This is what i have tried

document.getElementById("dcalc").disabled = true;

Answer 1

You should be able to set these via the attr() or prop() functions in jQuery as shown below:

jQuery (< 1.7):

// This will disable just the div
$("#dcacl").attr('disabled','disabled');

or

// This will disable everything contained in the div
$("#dcacl").children().attr("disabled","disabled");

jQuery (>= 1.7):

// This will disable just the div
$("#dcacl").prop('disabled',true);

or

// This will disable everything contained in the div
$("#dcacl").children().prop('disabled',true);

or

//  disable ALL descendants of the DIV
$("#dcacl *").prop('disabled',true);

Javascript:

// This will disable just the div
document.getElementById("dcalc").disabled = true;

or

// This will disable all the children of the div
var nodes = document.getElementById("dcalc").getElementsByTagName('*');
for(var i = 0; i < nodes.length; i++){
     nodes[i].disabled = true;
}