Adding value to input field with jQuery

Question

I want to add some value in an input field with jQuery. The problem is with the ID of the input field. I am using the id such as options[input2]. In that case my co

Answer 1

You have to escape [ and ]. Try this:

$('.button').click(function(){
    var fieldID = $(this).prev().attr("id");
    fieldID = fieldID.replace(/([\[\]]+)/g, "\\$1");
    $('#' + fieldID).val("hello world");
});

Demo: http://jsfiddle.net/7RJtf/1/