www.webdeveloper.com
Results 1 to 3 of 3

Thread: problem with calculation

  1. #1
    Join Date
    Nov 2010
    Posts
    10

    problem with calculation

    i have these 2 selections
    Code:
        <select id="rooms" name="rooms">
      <option>Please Choose</option>
      <option value="1" >1</option>
      <option value="2" >2</option>
      <option value="3" >3</option>
      <option value="4" >4</option>
       </select>
    
          <select id="type" name="type">
    
      <option>Please Choose</option>
      <option>Single - 50</option>
      <option>Double - 60</option>
      <option>Luxury double - 70</option>
      </select>
    i would like to give these values
    single:50
    double:60
    luxury double:70
    1)how can i do that?
    2)if i choose for example single room and number of rooms 2 how can i have the result 100?

    Thank you

  2. #2
    Join Date
    Oct 2005
    Location
    Cambridgeshire, UK
    Posts
    191
    Maybe something like so will work:

    HTML Code:
    <script type="text/javascript">
      function calculate_total() {
    
        var no_rooms = document.getElementById('rooms').value;
        var room_type = document.getElementById('type').value;
        var total = 0;
    
        if (no_rooms!="" && room_type!="") { // if both dropdowns contain values
          total = parseInt(no_rooms) * parseInt(room_type);
        }
    
        document.getElementById('current_total').innerHTML = total;
    
      }
    </script>
    
    Number of Rooms:
    <select id="rooms" name="rooms" onchange="calculate_total()">
      <option value="">Please Choose</option>
      <option value="1" >1</option>
      <option value="2" >2</option>
      <option value="3" >3</option>
      <option value="4" >4</option>
    </select>
    <br />
    Room Type:
    <select id="type" name="type" onchange="calculate_total()">
      <option value="">Please Choose</option>
      <option value="50">Single - 50&#163;</option>
      <option value="60">Double - 60&#163;</option>
      <option value="70">Luxury double - 70&#163;</option>
    </select>
    
    Current Total: <span id="current_total"></span>
    I haven't tested that but hopefully it gets you started. Notice how on the change of each dropdown we calculate the total by multiplying the two dropdown values together.
    BIOSTALL.com
    - Freelancing Services
    - Web Development Snippets, Hints and Tips

  3. #3
    Join Date
    Nov 2010
    Posts
    10
    thank you very much for your help.This works nice...I would like to ask you something else..
    i create a new selection with the number of people.
    I want to do this:
    If a single person books a double room a single-occupancy supplement should be charged. For example
    Double room with shower and WC:
    If 2 people sharing, price per person per night, &#163;60.
    If 1 person only - &#163;90 per night.

    HTML Code:
    <script type="text/javascript">
      function calculate_total() {
        
        var no_people = document.getElementById('people').value;
        var no_rooms = document.getElementById('rooms').value;
        var room_type = document.getElementById('type').value;
        var total = 0;
    
        if (no_rooms!="" && room_type!="" && breakf!="" && no_people!="1" ) 
    { // if both dropdowns contain values
          total = parseInt(no_rooms) * parseInt(room_type) + parseInt(breakf);
        }
    else
    {
         total = parseInt(no_rooms) * parseInt(room_type) + parseInt(breakf)+10;
    }
        document.getElementById('current_total').innerHTML = total;
    
      }
    </script>
    
     Number of people
     <br>
             <select id="people" name="people" >
        <option value="">Please Choose</option>
        <option value="1" >1</option>
        <option value="2" >2</option>
        <option value="3" >3</option>
        <option value="4" >4</option>
        </select>
    
             </br>
    
    Number of Rooms:
    <select id="rooms" name="rooms" onchange="calculate_total()">
      <option value="">Please Choose</option>
      <option value="1" >1</option>
      <option value="2" >2</option>
      <option value="3" >3</option>
      <option value="4" >4</option>
    </select>
    <br />
    Room Type:
    <select id="type" name="type" onchange="calculate_total()">
      <option value="">Please Choose</option>
      <option value="50">Single - 50&#163;</option>
      <option value="60">Double - 60&#163;</option>
      <option value="70">Luxury double - 70&#163;</option>
    </select>
    
    Current Total: <span id="current_total"></span>
    The result does not change!!!Somewhere in IF i think that is my fault.Could you please help me?
    Last edited by theo1985; 11-20-2010 at 01:59 PM.

Thread Information

Users Browsing this Thread

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

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 0.17959 seconds
  • Memory Usage 2,874KB
  • Queries Executed 15 (?)
More Information
Template Usage (34):
  • (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
  • (2)bbcode_html
  • (1)footer
  • (1)forumjump
  • (1)forumrules
  • (1)gobutton
  • (1)header
  • (1)headinclude
  • (1)headinclude_bottom
  • (3)memberaction_dropdown
  • (1)navbar
  • (4)navbar_link
  • (1)navbar_moderation
  • (1)navbar_noticebit
  • (1)navbar_tabs
  • (2)option
  • (3)postbit
  • (3)postbit_onlinestatus
  • (3)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 (70):
  • 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_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