jquery - show textbox when checkbox checked

Question

I have this form

  

    

        
                      

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Answer 1

Assuming markup will stay in same order can use next()

jQuery(document).ready(function($) {

    $('input.maxtickets_enable_cb').change(function(){
                $(this).next()[ this.checked ? 'show' : 'hide']();  
    }).change();
});

Answer 2

Put a div across your checkbox and text box

<form action="">
<div id="opwp_woo_tickets">
<div>
    <input type="checkbox" class="maxtickets_enable_cb" name="opwp_wootickets[tickets][0][enable]">
    <div class="max_tickets">
        <input type="text" name="opwp_wootickets[tickets][0][maxtickets]">
    </div>
</div>
<div>
    <input type="checkbox" class="maxtickets_enable_cb" name="opwp_wootickets[tickets][1][enable]">
    <div class="max_tickets">
        <input type="text" name="opwp_wootickets[tickets][1][maxtickets]">
    </div>
</div>
<div>
    <input type="checkbox" class="maxtickets_enable_cb" name="opwp_wootickets[tickets][2][enable]">
    <div class="max_tickets">
        <input type="text" name="opwp_wootickets[tickets][2][maxtickets]">
    </div>
</div>
</div>
</form>

and replace your jquery code with this one below,

jQuery(document).ready(function($) {
   $('input.maxtickets_enable_cb').change(function(){
       if ($(this).is(':checked')) $(this).parent().children('div.max_tickets').show();
       else $(this).parent().children('div.max_tickets').hide();
   }).change();
});

I have tested it and it works.

Answer 3

protected void EnableTextBox()
{
    int count = int.Parse(GridView1.Rows.Count.ToString());

    for (int i = 0; i < count; i++)
    {
        CheckBox cb = (CheckBox)GridView1.Rows[i].Cells[0].FindControl("CheckBox1");
        CheckBox cb1 = (CheckBox)GridView1.Rows[i].Cells[0].FindControl("CheckBox2");
        CheckBox cb2 = (CheckBox)GridView1.Rows[i].Cells[0].FindControl("CheckBox3");
        TextBox tb = (TextBox)GridView1.Rows[i].Cells[4].FindControl("txtration");
        TextBox tb1 = (TextBox)GridView1.Rows[i].Cells[5].FindControl("txtjob");
        TextBox tb2 = (TextBox)GridView1.Rows[i].Cells[6].FindControl("txtaadhar");            

        if (cb.Checked == true)
        {
            tb.Visible = true;               
        }
        else
        {
            tb.Visible = false;    
        }

        if (cb1.Checked == true)
        {
            tb1.Visible = true;                
        }
        else
        {
            tb1.Visible = false;              
        }

        if (cb2.Checked == true)
        {
            tb2.Visible = true;               
        }
        else
        {
            tb2.Visible = false;
        }
    }
}

protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
    EnableTextBox();
}

Answer 4

While you may need a JavaScript solution for other reasons, it's worth noting that this can be achieved with pure CSS:

input + div.max_tickets {
    display: none;
}

input:checked + div.max_tickets {
    display: block;
}

JS Fiddle demo.

Or, with jQuery, the simplest approach seems to be:

// binds the change event-handler to all inputs of type="checkbox"
$('input[type="checkbox"]').change(function(){
    /* finds the next element with the class 'max_tickets',
       shows the div if the checkbox is checked,
       hides it if the checkbox is not checked:
    */
    $(this).next('.max_tickets').toggle(this.checked);
// triggers the change-event on page-load, to show/hide as appropriate:
}).change();

JS Fiddle demo.

Reference:

• CSS:
  • :checked pseudo-class.
• jQuery:
  • change().
  • next().
  • toggle().

Answer 5

As your dividers are placed next to your checkboxes, you simply need to use jQuery's next() method to select the correct elements:

if ($(this).is(':checked'))
    $(this).next('div.max_tickets').show();
else
    $(this).next('div.max_tickets').hide();

Updated Codepen demo.

From the documentation (linked above), the next() method selects:

...the immediately following sibling of each element in the set of matched elements. If a selector is provided, it retrieves the next sibling only if it matches that selector.

Here we're selecting the next div.max_tickets element. However in your case just using next() with no parameters would suffice.

Answer 6

Change:

if ($(this).is(':checked')) $('div.max_tickets').show();

To:

if ($(this).is(':checked')) $(this).next('div.max_tickets').show();

jsFiddle example here