How do you handle multiple AJAX requests?

There is a requirement to make multiple AJAX calls parallelly to fetch the required data and each successive call depends on the data fetched in its prior call. Since AJAX is asynchronous, one cannot control the order of the calls to be executed.

How do AJAX requests work?

AJAX uses both a browser built-in XMLHttpRequest object to get data from the web server and JavaScript and HTML DOM to display that content to the user. Despite the name “AJAX” these calls can also transport data as plain text or JSON instead of XML. AJAX calls are beneficial for several reasons.

Can we execute Javascript in JMeter?

JMeter support javaScript over Java using Rhino. So, it has limitations to support only Rhino supported functions. So, if you function involving page rendering or system specific logic, it might not work. For detail declarative use full java Script runner samplers.

How long does an AJAX request take?

The identical ajax call on the live website takes anywhere between 1.2 – 1.8 seconds. I checked the droplet console – there is no stress on the CPU, RAM or disk.

How do I stop multiple Ajax requests?

ajax() returns a promise, you simply pass in the promise and the function takes care of the rest. Roughly speaking, here’s the usage. for prevent multiple ajax request in whole site. For example: If use ajax request in other ajax page, Using ajax in php loop, etc, Give you multiple ajax request with one result.

How would you handle two responses from the server to a jQuery Ajax request?

You can do it with 2 methods.

1. Splitting process. I means first Ask for data. If error, Show error.
2. send response after both operation. first read data, then write data. Send your response like, { “read”:{ “status”:1 }, “write”:{ “status”:0, “error”:”the error message” } }

How can I speed up Ajax response?

Five Ways to Speed Up Page Response Times

1. Use YSlow to profile and measure your website load times.
2. Using CSS Sprites to reduce HTTP Requests.
3. Load your CSS first and your JavaScript last.
4. Using Subdomains for parallel downloads.
5. Adding an Expires Header.

How long does Ajax wait for a response?

If you need to, you can always set it to something like 90 seconds or slightly longer. If it takes longer than 30 seconds though, there is probably a better, faster way to do something.

https://www.youtube.com/watch?v=Jy9qxSyzr_k