Hook up javascript

A Content Delivery Network CDN is a system of multiple servers that deliver web content to a user based on geographical location.

When you link to a hosted jQuery file via CDN, it will potentially arrive faster and more efficiently to the user than if you hosted it on your own server. We'll be using the CDN to reference jQuery in our examples. You can find the latest version of jQuery in Google's Hosted Libraries.

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If instead you wish to download it, you can get a copy of jQuery from the official website. We will begin this exercise by creating a small web project.

It will consist of style. Your JavaScript file scripts. At this point, the jQuery library is now being loaded into your site, and you have full access to the jQuery API. In this case, the API for jQuery contains all the information and documentation needed to access jQuery.

Configuring the Client

To view exactly what the DOM is, in your web browser, right click on the current web page select Inspect. This will open up Developer Tools. JavaScript can add, remove, and change any of these elements.

It is static and will not change, and will not be affected by JavaScript. The DOM is dynamic, and can change. To begin manipulating the page with jQuery, we need to ensure the document is "ready" first.

Setting Up

A big part of working with JavaScript is knowing how to connect to APIs. example to get up and running that you can build from in the future. This guide will take you through the JavaScript jQuery library by You should already know how to set up a simple website, and have an.

Create the file scripts. All jQuery code you write will be wrapped in the above code. Even if in some cases JavaScript won't be loaded until elements are rendered, including this block is considered to be best practice. In the introduction of this article, you saw a simple "Hello, World! To initiate this script and print text to the browser with jQuery, first we'll create an empty block-level paragraph element with the ID demo applied to it.

A basic jQuery example follows this format. We're now going to put our custom "Hello, World! By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. Best way to execute Javascript on an anchor Ask Question.

Alois Mahdal 5, 4 40 If you are loading the content via ajax and need to hook up event handlers, then you have these choices: Put a javascript handler in your HTML with your option 1 or 2. In my mind option 1 is a cleaner way of specifying it, but I don't think there's a mountain of difference between 1 or 2 - they both do essentially the same thing. I'm not a fan of this option in general because I think there's value in keeping the markup and the code separate.

After loading the content with ajax, call some local code that will find and hook up all the links. I would use addEventListener falling back to attachEvent to hook up this way as it more cleanly allows multiple listeners for a single object. Call some code after you load the content with ajax that finds all the links and hooks up the clicks to some generic click handler that can then examine meta data in the link and figure out what should be done on that click based on the meta data.

For example, this meta data could be attributes on the clicked link. When you load the content, also load code that can find each link individually and hook up an appropriate event handler for each link much the way one would do it if the content was just being loaded in a regular page.

Docs - JavaScript

Run some code that uses an actual framework like jQuery's. Which I would use would depend a little on the circumstances. You can include javascript library files using AJAX. Clicking on that link will display an array of objects in JSON. This will make reading JSON much, much easier. The request completes and we can access the data inside the onload function.


Using Inspect on index. You can mess up the URL to test the error. XMLHttpRequest is a widely supported built-in method of making requests. There is also a newer Fetch API which can be used for the same purpose, which is simpler but has less browser support. By the end, our page will consist of a logo image followed by a container with multiple card elements — one for each film.

Each card will have a heading and a paragraph, that contains the title and description of each film. If you remember, our index. That should help clarify what is actually happening there. The first thing in our website is the logo, which is an img element. Now we have a logo and a container, and we just need to place them in the website. The last step will be to take what we consoled out previously and make them into card elements.

JavaScript Tutorials for Beginners - Part 1 - How to Setup JavaScript

Hopefully you have a better understanding of what an API endpoint is, how the browser communicates with third-party API data with requests and responses, how to parse JSON into arrays and objects that JavaScript understands, and how to build a front end entirely with JavaScript. We did this all without having to worry about anything like Node. I turn down every ad, affiliate, and sponsor request I get.

I write free resources that help thousands of people successfully become devs. If you enjoy my content, please consider supporting what I do. Your email address will not be published. This is a really great tutorial! I want to create a Pokedex application using an API and this gave me a better idea of how to do that.

This is one of the clearest tutorials I've read for understanding how to use api calls in Javascript. Tania, se te agracede por tan claro y didactico tutorial, me fueron de mucha utilidad. Gracias por compartir tus conocimientos. I love this tutorial.

Your Answer

I'm working on a major app that requires several API's.