Jquery ajax loop through data

On my latest web app I ran into a problem that had me stumped for a while. I was trying to load data via AJAX from a number of files to insert into the web page.

In this post, you will learn how to loop over the JSON result or how to dynamically load subcategories of the selected category. It is an array data type consisting of attribute—value pairs. It is easy to read and write for humans. It is used primarily to transmit data between a web application and a server. JSON is popular among developers for data serialization.

Jquery ajax loop through data

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On my latest web app I ran into a problem that had me stumped for a while. I was trying to load data via AJAX from a number of files to insert into the web page. I did this by iterating through a number of jQuery. I was getting very strange behaviour such as seemingly missing AJAX calls and a muddle for-loop! It took a lunch break to clear my mind so I could regather my wits and troubleshoot the issue. Which turned out to be quite a sly JavaScript variable scope problem.

Jquery ajax loop through data

This is an extensive overview of the jQuery. In addition to this function, jQuery provides a helper function with the same name that can be called without having previously selected or created any DOM elements. The next example shows the use of the utility function. In this case the object to loop over is given as the first argument. This all boils down to providing a proper callback. However, since the context will always be an object, primitive values have to be wrapped:. The first argument is the current index, which is either a number for arrays or string for objects. The first example selects all the a elements in the page and outputs their href attribute:.

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Some portions of a web page are static, like the header, footer, and menus, and need to be reloaded when the user interacts with the page. About the Author: Darian Cabot. HTML 5 References. Here's an example:. C Language C Tutorial. Python Projects. Java 9. I had been stuck on this problem for a while. It is easy to read and write for humans. Computer Architecture. Linux Guide. In this file, we have written the Ajax code to dynamically fetch subcategory records of the selected category. Jan 3 Stateful vs Stateless A Stateful application recalls explicit subtleties of a client like profile, inclinations, and client activities

In this post, you will learn how to loop over the JSON result or how to dynamically load subcategories of the selected category. It is an array data type consisting of attribute—value pairs.

JS Language Course. Java Wrapper Class. The problem came about because the AJAX call is asynchronous meaning the for-loop is allowed to iterate from 0 to 4 without waiting for the AJAX request to receive its response from the server. GO Language. The ajax call will happen separately, maybe delayed, or out of order. Darian Cabot. C Language. All Rights Reserved. If you get any error, you can ask in the comment section below. On changing the category, the Ajax function calls the ' getSubCategory. HTML 5 References. Computer Network.