• Administrator

      Reputation : 320
      Registered on : 2012-02-22
      Posts : 2366
      School of codes courses: coming soon
    Add an attribute for an object


    Add an attribute class, id, placeholder, etc.. for an object using Javascript

    Set up

    You want to make your replay box just like on twitter? (Compose new Tweet...) just use the following codes. The Javascript will do the work for you.

    This code works on the section that support the class you choose...

    First, Go to Admin CP -> Modules -> JavaScript Codes Management -> Create a new JavaScript and paste the following code:

    Table-Code: (ID)

    document.getElementById('IDATTRIBUTE').attribute = "value";

    Table-Code: (CLASS)

    document.getElementByClass('CLASSATTRIBUTE').attribute = "value";

    Set this javascript code "In all Pages"

    Here you are an example of a code edited:
    Forum version: PunBB

    Description: Paste a message, that will be deleted on click, in the textarea

    document.getElementById('text_editor_textarea').placeholder = "Write your message in this ares";

    Customize the tutorial

    Edit "CLASS/IDATTRIBUTE" with the id/class of the object you want to add the attribute; change "Attribute" with the attribute-name you want to add and "value" with the value of the attribute

    Technical problems

    The tutorial was tested on this forum and with the browser Google Chrome; If you notice that the tutorial doesn't work for a browser or for a version of forum (PhpBB2, PhpBB3, PunBB, Invision) contact an administrator and we will fill this field with your reporting.

    Thanks, the staff

    For every problem or question please, contact us in the section Support for the tutorials, The staff will answer you as soon as it is possible...

    The team of the Forum of Codes.

    Niko wants you in the team Guest

    Community manager and Administrator at

    • Veteran staff member

        Reputation : 19
        Registered on : 2012-04-05
        Posts : 77
      Just so you know, its .getElementsByClass()
      You missed the 's' off of elements.

      And also, since jQuery is on our forums, your better off using jQuery for getting classNames, as this deals with supporting multiple browsers. getElementsByClass is only supported in modern(ish) browsers, and won't work for everyone. So you can write a generic getClass() function which deals with browser support or just use the jQuery since its their in the page.

      Also, accessing an attirubte via dot notation like that requires the attribute to be already set on some browsers. You may like to look at the setAttribute() function ;)