Dec 4, 2014 · What would be a good way to test Javascript on a browser? Should there be a localhost in my computer? and how to create one?

Sep 21, 2008 · 2 I usually just test javascript performance, how long script runs. jQuery Lover gave a good article link for testing javascript code performance, but the article only shows how …

How can I create a JavaScript page that will detect the user’s internet speed and show it on the page? Something like “your Internet speed is ??/?? Kb/s”.

Apr 27, 2020 · The question is: what is best way to check status code when get http response? for example

How can I check for null values in JavaScript? I wrote the code below but it didn't work.

I want to use JavaScript (I can also use jQuery) to do check whether a string matches the regex ^([a-z0-9]{5,})$, and get a true or false result. match() seems to check whether part of a string …

To add to some of the other answers, note that: keyup and keydown differ from keypress if you want to use String.fromCharCode() to get the actual digit from keyup, you'll need to first …

I used JQuery to parse JSON strings and I used trycatch statement to handle exceptions, but throwing exceptions for un-parsable strings slowed down my code, so I used simple Regex to …

– Daniel Schaffer Aug 2, 2010 at 18:09 3 See: How to check for undefined in javascript?, and whether a variable is undefined and How to handle ‘undefined’ in javascript – Shog9 Aug 3, …

JavaScript script working in HTML code tester but not on website Asked 5 years ago Modified 4 years, 4 months ago Viewed 68 times