Question

How can get value 2011 in input:name with jquery?

<input type="text" name="hi[2011][]">

Example:

<button>Click me</button>
<input type="text" name="hi[2011][]">


$('button').click(function() {
    var f_offset = $('input').prop('name');
    alert(f_offset);
}

Answer 1

Using match:

$('button').click(function() {
    var f_offset = $('input').prop('name');
    alert(f_offset.match(/\d+/)[0]);
})

Example