I want to pass to an array of controls' IDs to a javascript script function so it will switch control's enable state.

For example, in C# it would be like this:

func(false, new[] { "Control1", "Control2", "Control3" });

In that function I want to find corresponding controls and disable/enable them. For one control I do this next way:

<script type="text/javascript" language="javascript">
    function switchControls(value, arr) {
        for (var n = 0; n < array.length; n++)
            document.getElementById([n]).disabled = value;
    }
</script>

<asp:CheckBox runat="server"
     onclick="switchControls(this.checked,
        [
            '<%= Control1.ClientID %>',
            '<%= Control2.ClientID %>'
        ])" 
     Text="Take?" />

How to implement this properly? Have I to use jQuery?

I want to pass to an array of controls' IDs to a javascript script function so it will switch control's enable state.

For example, in C# it would be like this:

func(false, new[] { "Control1", "Control2", "Control3" });

In that function I want to find corresponding controls and disable/enable them. For one control I do this next way:

<script type="text/javascript" language="javascript">
    function switchControls(value, arr) {
        for (var n = 0; n < array.length; n++)
            document.getElementById([n]).disabled = value;
    }
</script>

<asp:CheckBox runat="server"
     onclick="switchControls(this.checked,
        [
            '<%= Control1.ClientID %>',
            '<%= Control2.ClientID %>'
        ])" 
     Text="Take?" />

How to implement this properly? Have I to use jQuery?

• asp
• javascript
• jquery

• 1 An array literal in JS is just a ma-separated list [in, square, brackets]. The weird thing is that you already have an example of this in your onclick handler code, so you already know how to do it. You are already sending two control ids to the function in an array, not one. So what's the question? – Daniel Earwicker Commented Apr 5, 2010 at 17:56
• 1 Seems like a bug in array indexing inside of switchControls. – ajm Commented Apr 5, 2010 at 17:58
• @ajm: Still doesn't work. alert(arr.length) shows nothing – abatishchev Commented Apr 5, 2010 at 18:01
• What does the call to switchControls look like? – ajm Commented Apr 5, 2010 at 18:03
• @ajm: I answered your ment in your answer below – abatishchev Commented Apr 5, 2010 at 19:16

3 Answers 3

No jQuery (or any other library) necessary.

It looks like your code will do the trick with a modification or two:

<script type="text/javascript">
    function switchControls(value, arr) {
        for (var n = 0; n < arr.length; n++){
            document.getElementById(arr[n]).disabled = value;
        }
    }
</script>  

As long as your ASP statement passes in a Boolean and an array of IDs (it looks like it does already, but I'm not familiar with ASP), it should work. For example, your onClick could call switchControls like this:

switchControls(true, ['foo','bar','baz']);

you don't "HAVE" to use jQuery, but it's somekind cooler to use it :)

function checkme(arr){
   if($.isArray(arr)){
     $.each(arr, function(){
       var currentState = this.attr('disabled');
       if(currentState == 'disabled' || currentState == 'true'){
          this.removeAttr('disabled');           
       }
       else{
          this.attr('disabled', 'disabled');
       }
     });
   }
}

usage: checkme([$("#someid"), $("#anotherid"), $("#anotherid")]);

<script type="text/javascript" language="javascript">
    function toggleControls(value) {
        $('.toggle').each(function() {
            if (value) {
                $(this).removeAttr('disabled');

            }
            else {
                $(this).attr('disabled', 'true');
            }
        });
    }
</script>

<asp:CheckBox runat="server" onclick="toggleControls(this.checked)" Text="Take?" />
<asp:TextBox runat="server" CssClass="toggle" />