How does the onclick event work in JavaScript?

The onclick and alert events are most frequently used event type in the JavaScript for web pages. If any anonymous function to the HTML elements the onclick attribute will attach event to this element.

How to trigger the onclick event on a radio button?

To trigger the onClick event on a radio-button invoke the click () method on the DOM element: I agree with @annakata that this question needs some more clarification, but here is a very, very basic example of how to setup an onclick event handler for the radio buttons:

How to attach a JavaScript event handler to a radio button list?

You can then assign the JavaScript function to the onClick property. This blog post; attaching client-side event handler to radio button list by Juri Strumpflohner explains it all. This only works if you know the ListItems in advance and does not help where the items in the RadioButtonList need to be dynamically added using the code behind.

How to use onclick to create a dropdown button?

Using onclick to create a dropdown button: // Get the button, and when the user clicks on it, execute myFunction. document.getElementById(myBtn).onclick = function() {myFunction()}; /* myFunction toggles between adding and removing the show class, which is used to hide and show the dropdown content */.

How to use the onclick attribute in JavaScript?

In HTML, we can use the onclick attribute and assign a JavaScript function to it. We can also use the JavaScript’s addEventListener () method and pass a click event to it for greater flexibility.

How to pass onclick prop to React component?

What you need to do is, inside of the SensorItem component pass the onClick prop to an DOM component’s onClick event: The problem, as being explained in another answer, is that onClick on a React component (contrary to native DOM element like or ) is treated as passing of component property, and not of a DOM event handler.

What to do if component does not declare onclick?

And as most likely your component doesn’t declare onClick property, that property value simply gets lost. But the solution that usually works best for me is to group all the undefined component’s properties using object destructuring notation, then pass them all to the root DOM element within that component.