www.webdeveloper.com
Results 1 to 9 of 9

Thread: dynamic form creation

  1. #1
    Join Date
    Nov 2010
    Posts
    19

    dynamic form creation

    Hello!

    A while back, I asked for some help with dynamic form creation. I wanted a user to be able to enter into a text field how many designs he or she would like, then, based on that number, be provided with a pair of text boxes that asked 1) name of design 2) quantity of that particular design.

    I received this cool way of doing it by user thraddash :


    <head>
    <script type="text/javascript">

    function BuildFormFields($amount)
    {
    var
    $container = document.getElementById('FormFields'),
    $item, $field, $i;

    $container.innerHTML = '';
    for ($i = 0; $i < $amount; $i++) {
    $item = document.createElement('div');
    $item.style.margin = '3px';

    $field = document.createElement('span');
    $field.innerHTML = 'Name of Design';
    $field.style.marginRight = '10px';
    $item.appendChild($field);

    $field = document.createElement('input');
    $field.name = 'Design[' + $i + ']';
    $field.type = 'text';
    $item.appendChild($field);

    $field = document.createElement('span');
    $field.innerHTML = 'Quantity of Design';
    $field.style.margin = '0px 10px';
    $item.appendChild($field);

    $field = document.createElement('input');
    $field.name = 'Quantity[' + $i + ']';
    $field.type = 'text';
    $item.appendChild($field);

    $container.appendChild($item);
    }
    }

    </script>

    </head>
    <body>

    <form method="post" action="order.php">
    How Many? <input type="text" onkeyup="BuildFormFields(parseInt(this.value, 10));" />
    <div id="FormFields" style="margin: 20px 0px;"></div>
    <input type="submit" />
    </form>

    </body>
    </html>



    As a followup, I wonder how to control in a table where each of these text boxes will appear. Any help is very appreciated. Thank you in advance!

    Thomas

  2. #2
    Join Date
    Apr 2003
    Location
    Netherlands
    Posts
    21,654
    If you mean a html table then create this using dom methods: http://www.howtocreate.co.uk/tutoria...ript/domtables.

    Using a '$' in scripting can create side effects if a JavaScript library is used. All libraries use it as a special meaning.
    Also the iteration used in the name attributes is probably unnecessary as php will see Quantity[] as an array.
    At least 98% of internet users' DNA is identical to that of chimpanzees

  3. #3
    Join Date
    Nov 2010
    Posts
    19
    thank you for your reply.

    I read the page at the link you supplied and it does seem pretty useful. I am, however, too novice to understand where to put that code into my code.

    When I put it here, where it seems sensible to me, it broke.

    var theTable = document.getElementById('order_table_1');
    theTable.tBodies[0].appendChild(document.createElement('tr'));
    $field = document.createElement('span');
    $field.innerHTML = 'Name of Design';
    $field.style.marginRight = '10px';
    $item.appendChild($field);


    Can you be more specific on how to implement this please? Thanks again!
    Thomas

  4. #4
    Join Date
    Apr 2003
    Location
    Netherlands
    Posts
    21,654
    Simpler version
    Code:
    function BuildFormFields(amount)
    {
    var container = document.getElementById('FormFields');
    container.innerHTML = '';
    var tab = '<table><tbody><tr><th>Name of Design</th><th>Quantity of Design</th></tr>';
    for (var i = 0; i < amount; i++) {
        tab += '<tr><td><input type="text" name="Design[]"></td><td><input type="text" name="Quantity[]"></td></tr>';
        }
    container.innerHTML = tab +  '</tbody></table>';
    }
    At least 98% of internet users' DNA is identical to that of chimpanzees

  5. #5
    Join Date
    Nov 2010
    Posts
    19

    file upload with progress bar possible too

    Yes, the innerHTML is a lot less verbose. Thank you!

    How could you apply a file upload (FTP) button and an ajax progress bar to each iteration of that loop?

    Thomas

  6. #6
    Join Date
    Apr 2003
    Location
    Netherlands
    Posts
    21,654
    A file upload input?
    What has Ajax got to do with this script?
    At least 98% of internet users' DNA is identical to that of chimpanzees

  7. #7
    Join Date
    Nov 2010
    Posts
    19
    Since the files being transferred are pretty heavy (60 - 80 mb), I thought I'd incorporate a progress bar so the user will know something is happening. I was under the impression that Ajax was necessary for that back-and-forth communication so the progress bar would know what amount of the file had been received in order to change it's level of completion.

  8. #8
    Join Date
    Apr 2003
    Location
    Netherlands
    Posts
    21,654
    Ajax can't upload images, it can only fake it using an iframe
    http://valums.com/ajax-upload/
    At least 98% of internet users' DNA is identical to that of chimpanzees

  9. #9
    Join Date
    Nov 2010
    Posts
    19
    yes. i thought I would use php to upload the file, then ajax to show the progress; is this inaccurate?

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
HTML5 Development Center

"

"

X vBulletin 4.2.2 Debug Information

  • Page Generation 0.19203 seconds
  • Memory Usage 2,920KB
  • Queries Executed 13 (?)
More Information
Template Usage (33):
  • (1)SHOWTHREAD
  • (1)ad_footer_end
  • (1)ad_footer_start
  • (1)ad_global_above_footer
  • (1)ad_global_below_navbar
  • (1)ad_global_header1
  • (1)ad_global_header2
  • (1)ad_navbar_below
  • (1)ad_showthread_firstpost_sig
  • (1)ad_showthread_firstpost_start
  • (1)ad_thread_first_post_content
  • (1)ad_thread_last_post_content
  • (1)bbcode_code
  • (1)footer
  • (1)forumjump
  • (1)forumrules
  • (1)gobutton
  • (1)header
  • (1)headinclude
  • (1)headinclude_bottom
  • (9)memberaction_dropdown
  • (1)navbar
  • (4)navbar_link
  • (1)navbar_moderation
  • (1)navbar_noticebit
  • (1)navbar_tabs
  • (2)option
  • (9)postbit
  • (9)postbit_onlinestatus
  • (9)postbit_wrapper
  • (1)spacer_close
  • (1)spacer_open
  • (1)tagbit_wrapper 

Phrase Groups Available (6):
  • global
  • inlinemod
  • postbit
  • posting
  • reputationlevel
  • showthread
Included Files (26):
  • ./showthread.php
  • ./global.php
  • ./includes/class_bootstrap.php
  • ./includes/init.php
  • ./includes/class_core.php
  • ./includes/config.php
  • ./includes/functions.php
  • ./includes/functions_navigation.php
  • ./includes/class_friendly_url.php
  • ./includes/class_hook.php
  • ./includes/class_bootstrap_framework.php
  • ./vb/vb.php
  • ./vb/phrase.php
  • ./includes/functions_facebook.php
  • ./includes/functions_calendar.php
  • ./includes/functions_bigthree.php
  • ./includes/class_postbit.php
  • ./includes/class_bbcode.php
  • ./includes/functions_reputation.php
  • ./includes/functions_notice.php
  • ./packages/vbattach/attach.php
  • ./vb/types.php
  • ./vb/cache.php
  • ./vb/cache/db.php
  • ./vb/cache/observer/db.php
  • ./vb/cache/observer.php 

Hooks Called (71):
  • init_startup
  • friendlyurl_resolve_class
  • init_startup_session_setup_start
  • database_pre_fetch_array
  • database_post_fetch_array
  • init_startup_session_setup_complete
  • global_bootstrap_init_start
  • global_bootstrap_init_complete
  • cache_permissions
  • fetch_threadinfo_query
  • fetch_threadinfo
  • fetch_foruminfo
  • load_show_variables
  • load_forum_show_variables
  • global_state_check
  • global_bootstrap_complete
  • global_start
  • style_fetch
  • global_setup_complete
  • showthread_start
  • showthread_getinfo
  • strip_bbcode
  • friendlyurl_clean_fragment
  • friendlyurl_geturl
  • forumjump
  • cache_templates
  • cache_templates_process
  • template_register_var
  • template_render_output
  • fetch_template_start
  • fetch_template_complete
  • parse_templates
  • fetch_musername
  • notices_check_start
  • notices_noticebit
  • process_templates_complete
  • friendlyurl_redirect_canonical
  • showthread_post_start
  • showthread_query_postids
  • showthread_query
  • bbcode_fetch_tags
  • bbcode_create
  • showthread_postbit_create
  • postbit_factory
  • postbit_display_start
  • postbit_imicons
  • bbcode_parse_start
  • bbcode_parse_complete_precache
  • bbcode_parse_complete
  • postbit_display_complete
  • memberaction_dropdown
  • tag_fetchbit
  • tag_fetchbit_complete
  • forumrules
  • navbits
  • navbits_complete
  • build_navigation_data
  • build_navigation_array
  • check_navigation_permission
  • process_navigation_links_start
  • process_navigation_links_complete
  • set_navigation_menu_element
  • build_navigation_menudata
  • build_navigation_listdata
  • build_navigation_list
  • set_navigation_tab_main
  • set_navigation_tab_fallback
  • navigation_tab_complete
  • fb_like_button
  • showthread_complete
  • page_templates