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Home/ Questions/Q 3490214
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Editorial Team
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Editorial Team
Asked: May 18, 20262026-05-18T11:29:20+00:00 2026-05-18T11:29:20+00:00

How do I write a regex that says, if word/string starts with the letters

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How do I write a regex that says, if word/string starts with the letters ‘BT’?

Here’s the code I working with:

    if(val.match(/^\S{5,}$/)){

        if(val.match(/^BT/)){

            alert('Unfortunately you cannot buy or sell registrations in the Auctions if you live in Northern Ireland');
            return false;

        }else{

            postcode.val(val.slice(0, -3)+' '+val.slice(-3));
            $('#Postcodelookup').fadeIn(300);

        }
    }else{...

Any help would be appreciated as I’m quite new to using regex, Thanks

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  1. Editorial Team
    Editorial Team
    2026-05-18T11:29:21+00:00Added an answer on May 18, 2026 at 11:29 am

    You want /\bBT/.

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