Empty Input Value Issue in JavaScript

Storing the value property of an input field into a variable can lead to an issue where the value remains empty regardless of user input. To understand this, let's examine the code you provided:

const inputValue = document.querySelector("#inputField").value;

This line assigns the value of the input field to the inputValue variable when the script is first executed. However, it does not update this value as the user types in the input field. Strings in JavaScript are immutable, meaning that once stored in a variable, their value cannot be changed.

To address this issue, you have two options:

1. Query the Element Every Time:
   Update the inputValue variable with the latest value every time the button is clicked.

   const testing = () => {
     const inputValue = document.getElementById("inputField").value;
   
     alert(inputValue);
   }

2. Store a Reference to the Element:
   Maintain a reference to the input field element and retrieve its value dynamically whenever needed.

   const inputElement = document.getElementById("inputField");
   const testing = () => alert(inputElement.value);

By implementing either of these solutions, you can ensure that the input value is always up-to-date and accurately reflects any changes made by the user.