www.webdeveloper.com
Results 1 to 4 of 4

Thread: Animating an element right to left and left to right help.

  1. #1
    Join Date
    Aug 2013
    Posts
    2

    Animating an element right to left and left to right help.

    Hi, i am quite new to javascript. i am trying to animate a div tag right to left and then left to right by using window.onload. i have written my code below. Please help sombody to fix this.

    Code:
    <script language="javascript">
    function move() {
      var elem = document.getElementById('example_block');
      var left = 0;
    
      function animate_forward() {
        
        left++;  // update parameters 
        
        elem.style.left = left + 'px'; // show frame 
    
        if (left == 660){  // check finish condition
          clearInterval(id);
    	  animate_backward();
    	  }
    	  function animate_backward(){
    	  	left--;  // update parameters 
        
    		elem.style.left = +left + 'px'; // show frame 
    	
    		if (left == 0){  // check finish condition
    			  clearInterval(id);
    		  }
    	  }
      }
    
      var id = setInterval(animate_forward, 1); // draw every 10ms
    }
    window.onload = move;
    </script>
    
    <div class="example_path">
    	<div id="example_block"></div>
    </div>

  2. #2
    Join Date
    Jun 2008
    Posts
    106
    Your div doesn't move because you have no CSS "position" property set.
    It needs to have a "position" like so:
    Code:
    <div class="example_path">
         <div id="example_block" style="position: absolute; top: 0; left: 0;">text</div>
    </div>
    I made some improvements: http://pastebin.com/49Frdqra
    It's a lot more dynamic and it moves at 30 fps.

    I chose 30 fps because it's a good display interval, and also because yours was too small.
    The minimum interval is 8ms on Firefox and 5ms on Chrome (test at http://jsfiddle.net/FfW9p/)

  3. #3
    Join Date
    Aug 2013
    Posts
    2
    Thank you very muck tenfold. it works.

  4. #4
    Join Date
    Oct 2012
    Location
    Bangalore
    Posts
    2
    as you're working js. you'll not be able to get exact solution of animation. you can shift to jQuery for the good result..

    <script>
    $(document).ready(function() {

    $(".example_path").animate({
    marginLeft: "50%",
    }, 1500 );

    });
    </script>


    so this will work out with ease. 1500 is the speed of movement(animation) in ms. and 50% is the width till where it should animate.

    Thanks & Regards

    Mohammed Ameenulla

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 0.15085 seconds
  • Memory Usage 2,865KB
  • Queries Executed 15 (?)
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
  • (2)bbcode_code
  • (1)footer
  • (1)forumjump
  • (1)forumrules
  • (1)gobutton
  • (1)header
  • (1)headinclude
  • (1)headinclude_bottom
  • (4)memberaction_dropdown
  • (1)navbar
  • (4)navbar_link
  • (1)navbar_moderation
  • (1)navbar_noticebit
  • (1)navbar_tabs
  • (2)option
  • (4)postbit
  • (4)postbit_onlinestatus
  • (4)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