itemsTextStartsWithTypedValue = function (sItemText, sTypedValue) {
		if (typeof sItemText != "string" || sItemText === "" || typeof sTypedValue != "string" || sTypedValue === "") {
			return false;
		}
		return sItemText.toLowerCase().startsWith(sTypedValue.toLowerCase());
	}
Checks whether the text of an item starts with the user input.

@param {string} sItemText The item text property.
@param {string} sTypedValue The user input.
@returns {boolean} Whether the item starts with the given input.