how to populate textarea when a checkbox is clicked using jquery

Question

i want to detect if the checkbox is set to true and then put some data into a textarea. any examples of this?

Answer 1

$('input[type=checkbox]').change(function(){
   setMyTextArea(getMyMessage(this.checked));    
});

function setMyTextArea(text){
    $('#MyTextArea').val(text);    
}

function getMyMessage(checked){
    return (checked ? myCheckedMessage : myUncheckedMessage);
}

Answer 2

Here's a quick and dirty example you could hook into an event handler:

Sample:

if ($("#myCheckbox").attr("checked")) {
   $("#myTextarea").text("some text");
}

Assume these controls are rendered:

<input type="checkbox" id="myCheckbox"/>
<textarea id="myTextarea"></textarea>