itziki itziki - 5 months ago 10
Javascript Question

Show/hide textfile depending on radio buttons' selection

I know this is a repeated question, but I cannot make it run. I tried all the solutions I found here in SO and googling...

I have this radio button form in my page. What I want is that when the user selects the 'only one attendee' option a text field appears ONLY for this option. If the user selects another one it dissapears.

Normal form

Once the user selects only one option, the text box appears.

expanded form

I've been trying doing with javascript. I use this piece of code

<script>
$(document).ready(function()
$("#send_to_one").hide();
$("input:radio[name="people"]").change(function(){
if(this.checked){
if(this.value =='one'){
$("#send_to_one").show()
}else{
$("#send_to_one").hide();
}
}
}
});
</script>


The form's code is

<div id="send_to">
<input type="radio" id="send_poll" name="people" value="all" checked="checked">all the attendees</br>
<input type="radio" id="send_poll" name="people" value="one" >only one attendee<br/>
<div id="send_to_one">
<label>Write the attendee's name: </label><input type="text" id="attendeename"><br/><br/>
</div>
<input type="radio" id="send_poll" name="people" value="group">a group of attendees</br>
</div>


I've checked that the javascript files are loaded. I also tried putting the javascript code inside the html.erb file where the form is, in a separated .js file and in application.htm.erb's
<head></head>
section, but no luck. Where do I need to put each part of code exactly in order to work?

Using Rails 3.0.4, Ruby 1.8.9. I'm also using JQuery

Answer

LIVE DEMO

HTML:

<div id="send_to">
  <input type="radio" id="send_poll" name="people" value="all" checked="checked" />all the attendees<br/>      
  <input type="radio" id="send_poll" name="people" value="one" />only one attendee<br/>
  <div id="send_to_one">
      <label>Write the attendee's name: </label><input type="text" id="attendeename" /><br/><br/>
  </div>
  <input type="radio" id="send_poll" name="people" value="group" />a group of attendees<br/>              
</div>

jQ:

$(document).ready(function(){

    $("#send_to_one").hide();

    $("input:radio[name='people']").change(function(){  

            if(this.value == 'one' && this.checked){
              $("#send_to_one").show();
            }else{
              $("#send_to_one").hide();
            }

    });

});