on click event of button want to toggle dropdown

[anjneeksharma]

If user click on button on click events its calling one function that function should toggle drop down
but I am using let drop = document.querySelector(".classname"); but this statement is returning me null instead of that drop down.

is someone can help me how can i update dropdown based on it class

toggleDropdown(e) {
let abc = document.querySelector(".newclass");
console.log(abc);
}

[sorvell]

The description is a little unclear and it would be helpful to have a reproduction of the issue. However, maybe it's possible that you're trying to use document.querySelector to try to find an element that's in your element's shadowRoot? If so, you'd need to do this.shadowRoot.querySelector instead of document.querySelector.

[sorvell]

Closing based on previous answer. Please feel free to re-open if the problem persists.