Updating a Tag's Class with the use of getElementsByTagName

I need assistance changing the class of all elements with the 'input' tag using the getElementsByTagName method. I am struggling to successfully modify their classes as my attempts so far have not been fruitful. Any guidance would be greatly appreciated.

var myList = document.getElementsByTagName("input");
for(i = 0; i < myList.length; i++){

    //My current method is failing to work
    myList[i].className = "btn btn-success";
}

Answer №1

When iterating over a list in JavaScript, always reference myList, not mylist. Here's an example:

const myList = document.querySelectorAll("button");
for (let i = 0; i < myList.length; i++) {
    //this code snippet will execute successfully
    myList[i].classList.add("active");
}

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

Unable to interact with a div button using Selenium WebDriver

var webdriver = require('selenium-webdriver'); var driver = new webdriver.Builder(). withCapabilities(webdriver.Capabilities.chrome()). build(); driver.get('https://www.tumblr.com/login'); driver.findElement(webdriver.By.id(&ap ...

Troubleshooting: JavaScript Bookmarklet Fails to Execute on Certain Websites

Recently, I created a unique bookmarklet that functions flawlessly on some websites, but unfortunately fails to work on others. Interestingly, even when it doesn't work, the script is still added to the bottom of the page; however, only a portion of t ...

Calculate the difference between the current value and the previous value

As I work on developing an app using vue.js, I am currently facing a minor issue. async fetchCovidDataByDay(){ const res = await fetch(`https://api.covid19api.com/live/country/${this.name}/status/confirmed`); const data = await res.json(); this ...

Tips for hiding a popover in Angular when clicking outside of it

In a demo I created, rows are dynamically added when the user presses an "Add" button and fills in a name in an input field. Upon clicking "OK," a row is generated with a Star icon that should display a popover when clicked. While I have successfully imple ...

Forward user to a subdomain once they have successfully logged in on an Angular 2 application

I've been working on an Angular 2 application and I'm looking to redirect users from www.example.com to admin.example.com after they successfully log in. What is the best way to accomplish this using Angular 2? Additionally, how can I test this f ...

Having trouble getting webpack to transpile typescript to ES5?

Despite following official guides and various tutorials, I am still facing an issue with compiling my code to ES5 using TypeScript and webpack. The problem is that the final bundle.js file always contains arrow functions. Here is a snippet from my webpack ...

passing data from the view to the controller

When I choose an option from the dropdown menu, the selected value is not being passed to the controller action method. Although the selected value is binding in Ajax, it is not binding in the controller action method. Check out our page <div class="ro ...

Adjust the hue as you scroll

I've been searching for a solution to this issue, but I haven't been able to make it work. My goal is to have the page header change from a transparent background to a red background as the user starts scrolling down the page. $(window).on("s ...

Expanding Module Scope to Just the Request (employing Require, Node.js)

Original Query The project I am currently working on is using Express to manage HTTP requests. The structure of the project is quite intricate, with multiple embedded require statements. Our main challenge lies in maintaining access to the request and re ...

Tips for creating scrollable popovers in Bootstrap 4

I came across a similar question, but the solution provided didn't work for me and I'm not sure why. Why is my popover content not scrolling when it exceeds 50px? Also, a side question: I'm facing an issue with newlines within the popover wh ...

Invoker of middleware and stack functions for Express.js with a focus on capturing the response object

It appears that the expressjs app contains a stack of Layer object Arrays. What function is utilized to pass the I am curious about: When a request is sent from the http client, which function is called first and how are the stack array functions with mi ...

Tips to avoid conflicts between endpoints when building a REST API in an Express application

I am currently working with a REST API in an Express application to retrieve orders. http://localhost:2000/api/orders/chemists?orderBy=date&startDate=date1&endDate=date2 http://localhost:2000/api/orders/chemists?orderBy=chemist&startDate=date ...

Tips for detecting and handling errors in user input from the console

Is there a way to catch errors in Chrome's developer tools console when an input throws an error? I attempted using window.addEventListener("error") but it seems that the onerror event listener on window does not capture the console errors. ...

I want to learn how to iterate through an API response object in React and extract the 'urls' link for images

I'm currently facing an issue while attempting to iterate over an Object in React that is received from an API. My goal is to extract the 'regular' URL link from the object. I have a state variable called 'searchImages' which store ...

refresh the route without having to reload the controller

I have a specific detail page dedicated to each car ID, on this page, there is a gallery of photos fetched from the service. Users can click on these photos to view them in full size. I am looking to create a shareable URL that includes the selected car, ...

What could be causing the alteration of my JSON data when sent through a WEB.API Ajax request?

Before Ajax Call: "{ "UnitOfMeasureRelatedUnitDataInbound": [ { "Name": "test", "Active": true, "UnitOfMeasureTypeID": "dd89f0a0-59c3-49a1-a2ae-7e763da32065", "BaseUnitID": "4c835ebb-60f2-435f-a5f4-8dc311fbbca0", "BaseUnitName": null, ...

Struggling to integrate the navigation bar with Wordpress platform

For a while now, I have been facing challenges with the navigation bar on the WordPress theme I am currently creating. I am struggling to get the navigation bar to display correctly. Below is the code snippet from my header.php file: <body> &l ...

add the elements of an array to multiple div elements sequentially

I'm attempting to update all titles in .item with the values from array. The array I am using contains the following elements: var itCats = ['one', 'two', 'three', 'four']; Additionally, this is the HTML struc ...

Combining CodeIgniter4 with Vue.js and Webpack's devServer to handle CORS issues

Exploring Vue & CodeIgniter 4, starting from https://github.com/flavea/ci4-vue. No matter what I try, I encounter a persistent CORS error in dev mode: Access to XMLHttpRequest at 'http://example.com/public/api/book/get' from origin &apo ...

Creating a custom AngularJS HTTP interceptor that targets specific URLs

Is there a way to configure an $http interceptor to only respond to specific URL patterns? For example, I want the interceptor to only intercept requests that match "/api/*" and ignore any other requests. ...