Javascript code creates a blur effect on webpage bodies

On my webpage, I have multiple elements, including a "change BG" button. When this button is clicked, I want to hide all other content on the page except for the button using JavaScript. Alternatively, clicking the button could blur out all other elements on the webpage except for the "change BG" button through JavaScript.

The idea is that when a user clicks on the "change BG" button, they should only be able to interact with that specific element and not access any other content on the webpage.

javascripthtmlcss

Answer №1

To achieve this effect, you can create a hidden div within the body with a specific z-index value, such as 100, while assigning a z-index of 101 to a single element. By displaying the hidden div when needed and setting the background color to

background: rgba(100, 100, 100, 0.5)

for opacity, you can create the desired visual result. The remaining content can be placed in another div with a class name "main-content" and a z-index lower than 100. Check out this fiddle for reference

Answer №2

It can be quite challenging to keep a single element in the middle of a page visible without blurring or hiding it. One solution is to blur or hide all elements and then reveal a new button.

Here are a few possible approaches:

  • Utilize an existing "dialog" library to open a dialog box with a single button. Many libraries will overlay a semi-transparent screen on top of the document.
  • Hide all content using display:none and display the new button wherever desired.
  • Position a carefully constructed set of elements to cover all content except for the button (e.g., use 4 div elements around a hole in the middle).

Answer №3

Utilizing JavaScript, it is possible to create a blurred effect on DOM elements. Before revealing the code snippet, let me provide some context.

If your goal is to restrict access to hidden DOM elements, it's important to note that this cannot be achieved solely on the client-side. Once the client has received data from the server, they can potentially access it. Blurring elements with JavaScript primarily serves to enhance user experience (UX).

Here is an example of blurring functionality sourced from W3C:

$("input").blur(function(){
    alert("This input field has lost its focus.");
});

To securely hide information, server-side techniques like utilizing Node.js are recommended.

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