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JavaScript create second event from the first event


By : manikanta
Date : September 15 2020, 10:00 AM
I think the issue was by ths following , Simple use addEventListener for new created button like you do already initial.
code :
let btnEvent1 = document.getElementById("btn_event_1");
let sectionA = document.getElementById("eventDemo");

let counter = 1;

function createElements() {
  let newHeader = document.createElement("h1");
  let newButton = document.createElement("button");
  let newHeaderContent = document.createTextNode("Hello World " + counter );
  let newButtonContent = document.createTextNode("click me");
  newHeader.appendChild(newHeaderContent);
  newButton.appendChild(newButtonContent);
  newButton.setAttribute("type", "button");
  newButton.setAttribute("id", "btn_event_2");
  newButton.addEventListener("click", function(){
    createElements();
  });
  sectionA.appendChild(newHeader);
  sectionA.appendChild(newButton);
  counter++
}

btnEvent1.addEventListener("click", function(){
createElements();
});
   <!DOCTYPE html>
    <html lang="en">
        <head>
            <meta charset="UTF-8">
            <meta name="viewport" content="width=device-width, initial-scale=1.0">
            <meta http-equiv="X-UA-Compatible" content="ie=edge">
            <title>Event Demo 3</title>
        </head>
    
        <body>
            <section id="eventDemo">
                <h1>Hello World</h1>
                <button type="button" id="btn_event_1">click me</button>
            </section>
        </body>
    
        <script src="demoEvent.js"></script>
    </html>
  


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Javascript: Trigger an event that happens in a few seconds, but be able to cancel that event if another event happens?


By : user1558677
Date : March 29 2020, 07:55 AM
I wish this helpful for you Disclaimer: I am anything but a Javascript expert, so I'm not even sure if I'm approaching this correctly... , What you want to do on keypress is
code :
if(myTimeout)
   window.clearTimeout(myTimeout);

var myTimeout = window.setTimeout(function() {
   alert('one second has passed without any keypress');
}, 1000);

FireFox and javascript Problems (event.keyCode or event.charCode or event.which not work )


By : adrianols
Date : March 29 2020, 07:55 AM
this will help It works in IE because there, event is a global variable.
In Firefox, the event object is passed to the event handler, so you have to make the function accept a parameter:
code :
function a(event) {
    event = event || window.event // IE does not pass event to the function
    alert('a');
    alert(event.which);
    alert(event.keyCode);
    alert(event.charCode);
}
<asp:TextBox ID="TextBox1" runat="server" onkeyup="a(event)"></asp:TextBox>

Javascript: How to create event listener on Window.Blur () event?


By : Masum007
Date : March 29 2020, 07:55 AM
To fix the issue you can do Javascript: How to create event listener on Window.Blur () event?
code :
window.onblur = function() {
   //say goodbye
};

JavaScript - Avoid executing event's default action. `event.cancelable` vs `event.preventDefault`?


By : BobV
Date : March 29 2020, 07:55 AM
this one helps. When I don't want to execute the default action that is associated with the event, I use , This:
code :
if (e.preventDefault)
if (e.preventDefault)
  e.preventDefault();
else
  e.returnValue = false;

Create a Scroll Event with add Event Listener - Javascript


By : Punit Kumar
Date : March 29 2020, 07:55 AM
To fix this issue You have to get the scrollTop on the document body element, not on your box. In your case, box.scrollTop will always be 0.
Replace this:
code :
  if (box.scrollTop > 0) {
    box.style.background = "blue";
  }
  if (document.body.scrollTop > 0) {
    box.style.background = "blue";
  }
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