Button id cannot be accessed through onClick event handler

javascript click button by id
onclick javascript
addeventlistener
event handler javascript
javascript click event
event.target javascript
javascript event object
event handler example

I have a table of data, each row having a button with a unique id. The onClick event handler is supposed to log the button id to the console. However, the id is logged to console only sometimes.

<Button id={index} onClick={this.handleClick}>
     Click
</Button>
handleClick = e => {
    console.log('button id', e.target.id);
  }

The 'button id' text is logged to console each time the button is clicked, but the id (e.target.id) is logged to console only sometimes. What can I do to fix it?

The avaliblity of target.id on the click handler's event will depend on the implementation of the Button component that you're using here.

In the simple case, if you were using a "native" <button> (note the lower case "b") then your current approach would work as expected:

{/* Using the "native button" here */}
<button id={index} onClick={this.handleClick}>Log id</button>

handleClick = e => {
    // Native button will pass id value of element to e.target 
    console.log('button id', e.target.id);
}

Because you're using a <Button> component, the avaliblity of target.id in your onClick callback will depend on the implementation of this <Button> component (ie wether or not it passes a value for an id prop to the clickable element to produce the desired result)

A work around (which avoids implemntation specific issues noted above) would be to revise your code to something like:

{/* Define local arrow function, pass index in scope as second argument */}
<Button id={index} onClick={ e => this.handleClick(e, index) }>
     Click
</Button>

/* Extend function signature to take explict id argument */
handleClick = (e, id) => {
    console.log('button id', id);
  }

JavaScript - onClick to get the ID of the clicked button, When an event handler is called, it's called within the context of the element that was You can then access attributes of the element through that identifier. If you use an onclick event in button HTML control and try to call your custom JavaScript function, it will not execute because the browser will block it with the below error. That is the reason we have to use another approach to add an event listener to the button.

You don't need to use the nativ event.target.

Try this:

<Button id={index} onClick={this.handleClick.bind(this, index)}>
     Click
</Button>

Professional VB 2005 with .NET 3.0, NET uses more of a traditional Visual Basic event model than classic ASP. NET page, but that handler is also hooked up using the OnClick property of NET page markup, as illustrated in the following code: <asp:Button ID=”Button1” Runat=”server” events are available to the Button control that you cannot access by  This article provides ways for you to troubleshoot issues you are having with the on-premises data gateway and Power BI. It provides potential workarounds to known issues, as well as tools to assist you.

Try using this:

<Button id={index} onClick={this.handleClick(this, index)}>
     Click
</Button>

and then

handleClick(e, id) {
    console.log('button id', id);
  }

DOM onevent handlers, Elements can be interactive (links, buttons, images, forms, and so forth) or event handler for a particular event (such as click ) for a given object in different ways: so that accessing the attributes' values using JavaScript will get the That means you can't, for example, change Window.prototype.onload . As mentioned in the comment I found the problem in the ChangesApplied event handler. Changed the code to access row values from table.Rows[i][j] to table.Rows[i][j, DataRowVersion.Original] to fix it.

Introduction to browser events, input id = " elem " type = " button " value = " Click me " > < script > elem . onclick = function ( ) { alert ( 'Thank you' ) ; } ; </ script >. If the handler is assigned using an HTML-attribute then the browser only one onclick property, we can't assign more than one event handler. Accessing the element: this. Yesterday, one of the network admins was configuring AD and deleted the OU that contained the CRM user accounts. so I had to restore the AD to the latest backup, and add the deleted user accounts to AD. unfirtunately, there was not actual backup from the deleted objects.

Browser default actions, A click on a form submit button – initiates its submission to the server. If we handle an event in JavaScript, we may not want the corresponding ul id = " menu " class = " menu " > < li > < a href = " /html " > HTML </ a > </ li > < li > By default the browser on contextmenu event (right mouse click) shows a  Generic nether tracks cannot be accessed through /playsound. Log In. Export. XML Word then there should be a generic _music.nether sound event added for the other

Forms and Form Fields :: Eloquent JavaScript, By default, most types of HTML elements cannot be focused. A button with a type attribute of submit will, when pressed, cause the form to be submitted. This event can be handled by JavaScript, and the handler can prevent the <input type="text"> length: <span id="length">0</span> <script> var text = document. prodYear1 Is Not Nothing, but when evaluating prodYear1.Year IDE says prodYear1.Year = {"Deleted row information cannot be accessed through the row."} (prodYear2.Year says the same although code does not reach here) This may help more

Comments
  • Which Button component are you using