Question

Register the countChars event handler to handle the keydown event for the textarea tag. Note: The function counts the number of characters in the textarea.

Do not enter anything in the HTML file, put your code in the JavaScript section where it says "Your solution goes here"
1 klabel for-"userName">user name: 2
3

Answer 1

In JavaScript, you can bind the countChars function to the keydown event on a textarea element by selecting the element and using addEventListener to register the function as an event handler.

Step-by-step explanation:

To register the countChars event handler for the keydown event on a textarea in JavaScript, you need to locate the textarea element in the DOM (Document Object Model) and add an event listener to it. The countChars function should be defined to count the number of characters and then tied to the textarea element using this event listener. Here's an example of how you could write this in JavaScript:

// Assume countChars is a function that handles the keydown event
// and updates the character count
function countChars(event) {
// Code to count characters goes here
}

// Find the textarea element by its ID or any other selector
var textarea = document.querySelector('textarea');

// Register the countChars function as an event handler for keydown
textarea.addEventListener('keydown', countChars);

This code snippet will ensure that when a user presses a key while focused on the textarea, the countChars function is called, and it can perform its logic to count the characters.

Answer 2

Step-by-step explanation:

The following Javascript code is added in the Javascript section where it says "Your solution goes here" and counts the current number of characters in the text within the textArea tag. A preview can be seen in the attached image below. The code grabs the pre-created variable textareaElement and attached the onkeypress event to it. Once a key is pressed it saves the number of characters in a variable and then returns it to the user.

var textareaElement = document.getElementById("userName");

function textChanged(event) {

document.getElementById("stringLength").innerHTML = event.target.value.length;

}

// Your solution goes here

textareaElement.onkeypress = function() {

let numOfCharacters = textareaElement.value.length;

return numOfCharacters;

};