The underscore (_) parameter in HTTP GET requests

Lately, I've been seeing the '_' parameter on many websites with a seemingly random string attached to it. For example:

 website.com/?_=98765432

Can someone explain the significance of this parameter and how these numbers are generated?

Answer №1

One effective method to prevent browser caching of AJAX result sets is by incorporating a random numerical parameter into requests.

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

The focus of the input is lost when the value is being edited, specifically in the case where ngFor and ng

I'm facing an issue with a simple list that binds two-way to a parameter hero in my hero.component.ts. Whenever I begin typing in the input field, it seems to lose focus and I have to click on it again. How can I ensure that users are able to edit th ...

Interactive map navigation feature using React.js

Can someone help me figure out how to create a dynamic map with directions/routes? I am currently using the Directions Renderer plugin, but it only shows a static example. I want to generate a route based on user input. Below is the code snippet: /* ...

How can I set the input tag to reset back to 1 when a certain event occurs?

I am currently developing an HTML Snakes And Ladders game. On the settings screen, there is an input field where users can select the size of the board. Depending on their choice, they will be able to choose a maximum number of snakes and ladders. For exa ...

Unexpected token { in Fuse-Box when using Typescript

Here's the beginning of my fuse.ts file import { CSSPluginOptions } from 'fuse-box/plugins/stylesheet/CSSplugin'; import { argv } from 'yargs'; import * as path from 'path'; import { CSSPlugin, CSSResourcePlugin, Env ...

What causes an "Undefined index" error in jQuery when making AJAX requests?

Whenever I make an AJAX request in my main.js file, I encounter the following error message: Undefined index: id in sqlinfo.php on line 13 I am puzzled because I believe that I am populating the request object correctly. What's even more perplexing i ...

Python and Javascript clashing with one another

(Updated question for clarity). I am currently developing a flask app game that involves users inputting guesses via the web browser. The backend, which runs on Python, checks these guesses and provides feedback to the user about their accuracy. Additional ...

Can a JavaScript or jQuery function be triggered on input change to perform a PHP call to check a database?

Is it possible to implement live form validation without a page reload? I am looking to add a function like the one below: <input onchange="validate();"></input> function validate() { // PHP here to check input value against table value o ...

What is the reason behind the shifting behavior of e.currentTarget when using event delegation in jQuery?

Click here for the code snippet <div id="container"> <button id="foo">Foo button</button> <button id="bar">Bar button</button> </div> $('#container').on('click', function(e) { var targ ...

Developing microfrontends using Angular involves loading and navigating a compiled package from npm

I have been struggling to find a solution to an ongoing issue and wasting time on futile attempts. Currently, I am working with Angular 15 within a microfrontend architecture. My goal is to implement a system where I can download a compiled microfrontend ...

Managing the triggering of the automatic transition in view models

My question is straightforward and requires no elaborate explanation. Can Durandal be configured to control the use of transitions when transitioning between viewmodels? The motivation behind wanting to disable the animation is as follows: I have a sear ...

Encountering errors with passport-google-oauth20: InternalOAuthError arises when fetching user profile fails and attempting to set headers after they have already been sent to the client

When using passport strategies for various social media logins, I encountered the following two errors: InternalOAuthError: Failed to fetch user profile Cannot set headers after they are sent to the client I suspect that I may have returned a callback or ...

Trouble with executing asynchronous AJAX request using when() and then() functions

Here is the code that I am currently using: function accessControl(userId) { return $.ajax({ url: "userwidgets", type: "get", dataType: 'json', data: { userid: userId } }); }; var user ...

Discovering the flaw in my programming that pertains to JSON parsing

After countless hours of searching and reviewing documentation, I am still unable to identify the issue with my jQuery code. My goal is to practice reading a local JSON file and displaying its contents in the body of my HTML document. $(document).ready(fu ...

What is the method to have the text cursor within a text field start a few pixels in?

I need a text field with the cursor starting a few pixels (let's say 4) from the left-hand side. I am aware that this can be achieved by adjusting the size of the text field using padding, but I am curious if there is a way to resize the text box with ...

What is the best way to save a PDF from within a frame using JavaScript and an HTML5 <embed> tag?

I'm looking for assistance with a script for my website that dynamically generates a PDF after the user makes selections in one of the frames. The website uses the HTML5 tag to display the PDF file. Can anyone provide guidance on a script that can: ...

`Why won't the checkbox uncheck when the dropdown is changed in jQuery?`

I have a roster of users, each with a unique checkbox for selection. When I adjust the dropdown menu, a new group of users is chosen and marked as selected. However, I am struggling to uncheck the previously selected checkboxes based on the last dropdown c ...

Uploading files in AngularJS using Rails Paperclip

I have been working on implementing a file upload feature with AngularJS/Rails using the Paperclip gem. I was able to resolve the file input issue with a directive, but now I am facing an issue where the image data is not being sent along with other post d ...

The axios requests are sent to the backend API, but the webpage remains empty without

I am trying to retrieve a base64 encoded image from my local backend by making a local API call. The logging on the backend confirms that axios is successfully calling the API, however, the frontend displays an empty page with no data. What could be caus ...

Tips for performing an integration test on a material UI <Slider /> component using either userEvent or fireEvent

I'm facing some challenges while trying to perform an integration test on a material UI component. I can locate the slider element, but have not been successful in moving the slider and retrieving the new value. Can you provide any guidance on how to ...

Refreshing specific iframes without having to reload the entire webpage using jQuery

As the page loads initially, a hidden iframe and other visible ones are present. When a button is clicked, one of the visible iframes needs to be hidden while another becomes visible (with its src attribute set accordingly). The goal is to achieve this wit ...