Help with dropdowlist items:

[smithcgl9043167]

Hello friends!
What is the regular expression to modify this script so that it can do a type inverse function; instead of identifying the suffix "B", change to identify the prefix? "D item 5"?
Thanks.

dialog = new Window("dialog"); 
dialog.text = "Dialog"; 
dropdown1_array = ["Item_1 A" ,"Item_2 B" ,"Item_3 C","Item_4 B", "D item 5"]
dropdown1 = dialog.add("dropdownlist", undefined, undefined, {name: "dropdown1", items: dropdown1_array}); 
dropdown1.selection = 0; 
dropdown1.preferredSize.width = 300; 

dropdown1.onChange = function(){
    if(dropdown1.selection.text.match(/B$/)){// match(/B$/)) edite
        alert ("B")
     }
}

dialog.show();

[Kukurykus · Accepted solution]

/^D/

[smithcgl9043167]

Hi Kukurykus nice to see you again! It worked here, thanks for the help.