The .val() method is used to get or set the value of form elements such as input, checkbox, radio button, select and textarea.
js:
$(function(){
$('.old-value').text( $('input').val() ); // get the input value
$('input').val('changed input value'); // set the input value
$('.click').click(function() {
$('.old-value').text( $('input').val() );
});
});
html:
<div class="well">
<span class="click">get value</span>
<input type="text" value="input value">
<span class="old-value"></span>
</div>
Other examples with jquery .val():
$('select.foo option:selected').val(); // get the value from a dropdown select
$('select.foo').val(); // get the value from a dropdown select even easier
$('input:checkbox:checked').val(); // get the value from a checked checkbox
$('input:radio[name=bar]:checked').val(); // get the value from a set of radio buttons