JavaScript/ Velo -Trying to change an iput field / filter to case INSENSITIVE

Hi im trying to make the input filed case insensitive so that i can search for chicken and not Chicken.

Ill add a picture of the search bar, and ill add my code, but ive used <<<<<<< to single out the function and the calling of that function. Do i need to do something with the filter-option too and not just the input value?

Thank you. Its a bonus question but I can not let it go.

$w.onReady(function () {
// Codecademy - Called The Function <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
lowerCaseFilter();
// Pre-selected elements
const inputField = $w(‘#input’);
const dropdownElement = $w(‘#dropdown’);
const filterButton = $w(‘#filterBtn’);
const reset = $w(‘#resetBtn’);

// Add your code below
for (let i = 0; i < recipeList.length; i++) {
	let currentImage = $w(`#image${i}`);
	let currentName = $w(`#name${i}`);
	let currentIngredients = $w(`#ingredients${i}`);
	let currentInstructions = $w(`#instructions${i}`);
	let currentRating = $w(`#rating${i}`);

	currentImage.src = recipeList[i].image
	currentName.text = recipeList[i].name
	currentIngredients.text = recipeList[i].ingredients.join(', ')
	currentInstructions.text = recipeList[i].instructions
	currentRating.text = `${recipeList[i].rating}`
}


// Function <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
function lowerCaseFilter() {
	let userInput = $w('#input').value
	userInput.toLowerCase()
}


let recipeBoxes = $w('Box')

filterButton.onClick((event) => {
	let filterOut = inputField.value;
	let filterOption = dropdownElement.value;
	for (let i = 0; i < recipeBoxes.length; i++) {
		if (recipeList[i][filterOption].includes(filterOut)) {
			recipeBoxes[i].collapse();
		}
	}
})

reset.onClick((event) => {
	for (let k = 0; k < recipeBoxes.length; k++) {
		recipeBoxes[k].expand();
	}
})

});