On my page I have a button that runs a script. After the script does some number crunching it's supposed to print the result in the span, but it never works. The span has an ID and I am sure it is unique (a number is appended during a loop).
If I uncomment the alert statement, it returns "undefined".
This is the implementation:
The last line is the span in question. There are no PHP errors; everything prints and looks fine. I know the span exists because the initial value prints and has the proper styling applied to it (via the class).
I am working on a registration page.I did all the validation but facing problem during username validation.when a user enter email id in the textbox,it first check whether it is present in database or not.. if not present "register successfully" otherwise "email exists"
I have a textbox for entering URL. I validate that URL using regular expression. Now the problem is, How do i know whether the entered URL is exist or not.?For example, if user enter "http://www.daniweb.cam" rather entering "http://www.daniweb.com", how do i intimate them that the entered url is not valid.?
I'm not entirely sure this is possible. I hope it is, and it doesn't seem to far-fetched or impossible.
With JS, how would one go about checking if a user has DivX Web Player installed?
Usually people put in code within the embed, so if it the player doesn't load, it would have the message behind stating the fact. However I haven't seen this used at all with DivX, instead, you see pop-up boxes, whether installed or not, stating "Don't have DivX Web Player? Get it here for windows or mac"
I find this extremely annoying, and would never want such informalities on my website.
I'm using this script to make some changes to a table which is only accessible via a class serverside:
The first part of the code is a script from Robert Nyman, [url] - my function is added at the end of the script. It works fine, but my page is dynamically generated and sometimes this element with the class name doesn't exist. This gives an error when the page is loaded: "getElementsByClassName("login-headline", "table") is undefined". How can my function be rewritten so that it checks to see if the class is avaliable before running the script?