Cannot add class but elements are already added to the DOM

Hey I am trying to add an active class to searchResult HTML using JavaScript.

I try to search for recipe in search bar and results are displayed as it is shown in image.
Search Result
https://i.stack.imgur.com/vWj4m.jpg

When I click on a recipe from the search list I want to add a background color to the currently selected recipe(click on the recipe) using function resultHighlight()

function resultHighlight() is being called in the controller and produces an error. Since the HTML is already added(after a search query is fired) by function renderRecipe() then why it is unable to find href id and producing error ?

//Function to add background color

export const resultHighlight = id => {
document
.querySelector(a[href="#${id}"])
.classList.add("results__link--active");
};

Error Image
https://i.stack.imgur.com/m372A.jpg

NOTE: I tried console logging follwoing part and it returns null.

`document.querySelector(a[href="#${id}"])

//OUTPUT: null`

JavaScript has already added HTML by a function (Search result)

See the full question here

https://dev.to/dvgy/cannot-add-class-but-elements-are-already-added-to-the-dom-2km8