javascript - How to select an input inside a form, which ID contains dots -

let's have next form:

<form id="myform"> <input id="my.input.blabla"></input> </form>

how select input if contains dots?

something

document.getelementbyid("myform").getelementbyid("my.input.blabla");

doesn't work.

all need single phone call getelementbyid():

var inp = document.getelementbyid("my.input.blabla");

the values of "id" attributes must unique, there's no point in scoping lookup particular part of page.

javascript

Three