in my bot application their is a place where i need to ask the use to input or select a date from a calender. how can i achieve it

there is no default pattern, you can try to create you own "date picker" with inline buttons

just create form with one validator which checks the message by this regex:

^(?:(?:31(\/|-|\.)(?:0?[13578]|1[02]))\1|(?:(?:29|30)(\/|-|\.)(?:0?[1,3-9]|1[0-2])\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})$|^(?:29(\/|-|\.)0?2\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:0?[1-9]|1\d|2[0-8])(\/|-|\.)(?:(?:0?[1-9])|(?:1[0-2]))\4(?:(?:1[6-9]|[2-9]\d)?\d{2})$

how to get the username of the chat. for me its coming blank.

let _phonenumber;
$.sendMessage(Hi @${_username}, Please share your contact info using below button 'Share Contact' Button, {
   reply_markup: JSON.stringify({
           keyboard: [[ { text: 'Share contact', request_contact: true } ]]
   })
});
$.waitForRequest.then($ => {
   ($.message.contact) && ($.message.contact.phoneNumber) && (_phonenumber = $.message.contact.phoneNumber );
   console.log("$.message.contact.phoneNumber = ", _phonenumber || "");
   // At this point I have to hide "Share Contact" button from footer" ... ???"
})

how to hide the contact number button as soon as the user pressed it.

You ask to hide the custom keyboard to come back to the qwerty one? Yashko helped me with that a few days ago, try this:

$.sendMessage("text", { reply_markup: JSON.stringify({ remove_keyboard: true }) } );

forgot to say hi yesterday, so i'll do it now. i might be missreading sonmething in the reference here, but how do you properly bold parts of the message with the bot?

apparently it isnt't <b>

oh wait, got it

you have to send parse_mode 'html' option

sendMessage("text", {"parse_mode": "html"})

yeah, just figured that out 😅thanks

I saw this earlier. The problem is that I need to send some message. And according to my logic. As soon as they send the contract numbers. The button should disappear. I can use this and is working. But need to send some message along

gah i must be missing sonething out completely... if i get an inlineQuery and have it in scope and say I want it to show some article as "suggestion"/result, where do i get InlineQueryResultAricle from, and how do i properly call it

I should $.api.answer() right? and then i'll have to pass an array of InputQueryResults to it?

and how do i create a result properly?

the reference isn't particulary clear on that

Вроде было, но не нашел: как узнать, что это master, а это worker?