Case insensitive jQuery attribute selector

You can always use .filter():

var mans = $('input').filter(function() {
    return $(this).attr('name').toLowerCase().indexOf('man') > -1;
});

mans.css('background-color', 'black');

The key part here is toLowerCase() which lowercases the name attribute, allowing you to test it for containing man.

var control = $('input').filter(function() {
    return /*REGEX_VALUE*/i.test($(this).attr('id'));
});

*REGEX_VALUE* - the value you want to find

I ended up using regex to validate whether the attribute 'ID' satisfy... regex is much more flexible if you want to find a certain matching value or values, case sensitive or insensitive or a certain range of values...

The simplest way to do this is to add a case insensitivity flag 'i' inside the regex part of the selector:

So instead of

$( "input[name*='man']")

You could do

$( "input[name*='man' i]")

JS fiddle: https://jsfiddle.net/uoxvwxd1/3/