JavaScript popup displaying incorrectly

Question

JavaScript popup displaying incorrectly

In my experience, I have completed two web-related classes that involved similar projects with popups using HTML and JavaScript. However, I am facing an issue where the popup either does not show at all or appears for only a brief moment before closing itself. While I cannot share the entire code here, below is a snippet of the problematic block (I included the script at the end of the file, outside the HTML tag):

<script type="text/javascript">
var popup = document.getElementById('popup');
var btn = document.getElementById('btn_popup');
var close = document.getElementById('close');

btn.onclick = function(){
popup.style.display = "block";
}
close.onclick = function(){
popup.style.display = "none";
}
</script>

I have borrowed these code segments from other pages where they worked perfectly fine, but on this page, they seem to be malfunctioning. I also utilize PHP to populate the dropdown list within the popup form. Interestingly, while the popup displays correctly on the previous page, here it flashes for a split second before disappearing.

Is there a solution to this problem? Any insights or clues would be greatly appreciated. Please refrain from suggesting frameworks (apart from w3, excluding w3 modals) to address this issue. I am currently using the latest version of Google Chrome to view these files, and have also tested them on Mozilla with the same outcome.

javascript html css google-chrome popup

Answer 1

Answer №1

The issue at hand is the following:

<form action="page.php" method="get">

results in a redirection to page.php upon button click.

This occurs because by default, the "type" attribute of a button tag is set to "submit".

To prevent this behavior, simply include type="button":

<button type="button" id="btn_popup">Popup Button</button>

Answer 2

The issue at hand is the following:

<form action="page.php" method="get">

results in a redirection to page.php upon button click.

This occurs because by default, the "type" attribute of a button tag is set to "submit".

To prevent this behavior, simply include type="button":

<button type="button" id="btn_popup">Popup Button</button>

Answer 3

Answer №2

The issue lies in the fact that the popup does not display at all or only flashes for a brief moment before closing abruptly.

This occurs because the form is being submitted when you click on the popup button.

To resolve this, place your popup button outside of the form to avoid this behavior. Otherwise, you will need to handle prevent events accordingly.

<form>
  //your code
</form>
<button id="btn_popup">Popup Button</button>

I have created a fiddle for reference, feel free to take a look:

https://jsfiddle.net/ponrajpaul/42g9bk3c/

Answer 4

The issue lies in the fact that the popup does not display at all or only flashes for a brief moment before closing abruptly.

This occurs because the form is being submitted when you click on the popup button.

To resolve this, place your popup button outside of the form to avoid this behavior. Otherwise, you will need to handle prevent events accordingly.

<form>
  //your code
</form>
<button id="btn_popup">Popup Button</button>

I have created a fiddle for reference, feel free to take a look:

https://jsfiddle.net/ponrajpaul/42g9bk3c/

JavaScript popup displaying incorrectly

Answer №1

Answer №2

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