How to get elements of specific class starting with a given string?

Question

I have a list of elements that have multiple classes, for example:

Answer 1

This function can get Class, ID, Data and all kind of attributes using regex

$.fn.Get_Attr_Regex = function(Pattern,Type) 
{
    Type = Type || 'class';
    var List_Str = this.attr(Type);

    if(typeof List_Str !== typeof undefined && List_Str !== false) 
    {
        var regex = new RegExp(Pattern, "g");
        var List_Array = List_Str.split(" ");
        for(var i = 0; i < List_Array.length; i++)
        {
            if(regex.test(List_Array[i]))
            {
                return List_Array[i];
            }
        }
    }
    return false;
};

To use it

$('.T_Header').Get_Attr_Regex('btn.*','class'); // => return class value which start with btnxxx

or

$('.T_Header').Get_Attr_Regex('btn.*','id');  // => return id value which start with btnxxx

or

$('.T_Header').Get_Attr_Regex('btn.*','data-info'); // => return data attribute value which start with btnxxx