The JavaScript button's onClick event is not functioning properly, despite the method executing normally

I'm currently working on creating a button using JavaScript that, when clicked, will trigger an AJAX request to some PHP code.

Interestingly, I have already set up three buttons with the same functionality and they are all functioning perfectly.

What's puzzling is that if I call the method directly, it works just fine.

Here is the code for the button:

<button id="toggle-button">Toggle</button>

The JavaScript section:

var toggleButton = document.getElementById('toggle-button');
...
function init()
{
    ...
    toggleButton.onClick = handleToggleClick;
    ...
}

function handleToggleClick(event)
{
    alert("Sending Request");
    var admin_url = "http://localhost/wp-admin/admin-ajax.php";
    var data = {
        action : 'toggle',
    }
    $.post(admin_url, data, function(resp) {
        alert(resp);
    });
}

In the Chrome Developer Tools Console, I tried the following:

handleToggleClick(null); // The request is sent
autoScheduleButton.onClick(); // The request is sent
autoScheduleButton.onClick; //It prints out the function
autoScheduleButton; //It displays the HTML of the button.

Despite having three other working buttons with similar functionalities, this specific one seems to be giving me trouble. It's quite puzzling because everything seems to be in order.

Hopefully, there's just something obvious that I missed here.

EDIT:

In my initial post, there was an error in the code due to anonymization. Now, the code shown above within the init method is correct.

Previously, the code looked like this: function init() { ... toggleButton.onClick() = handleToggleClick; ... }

Answer №1

When setting up the init function, make sure to correctly assign the handleToggleClick function to the onClick event of the toggleButton. Avoid mistakenly trying to call the onClick() function within the assignment.

To achieve this, simply use

toggleButton.onClick = handleToggleClick;

function init()
{
    ...
    toggleButton.onClick = handleToggleClick;
    ...
}

Answer №2

Within the init function, the code snippet

toggleButton.onClick() = handleToggleClick;
is an incorrect assignment. This line mistakenly implies that onClick function is being called on toggleButton and then assigned to the result handleToggleClick.

To rectify this, update it to

toggleButton.onClick= handleToggleClick
. This adjustment signifies that you are now listening for a click event on toggleButton and subsequently invoking the handleToggleClick function.

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