www.webdeveloper.com
Results 1 to 3 of 3

Thread: [RESOLVED] Simple javascript fails 6: slice() method

Hybrid View

  1. #1
    Join Date
    Nov 2009
    Posts
    65

    resolved [RESOLVED] Simple javascript fails 6: slice() method

    Hey,

    the script:
    HTML Code:
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <title>De waarde van een cookie uitlezen</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <script type="text/javascript">
    /* <![CDATA[ */
    function waarde_ophalen(waarde){
    	string=document.cookie;
    	positie1=string.indexOf(waarde);
    	positie2=string.indexOf("=",positie1)+1;
    	positie3=string.indexOf(";",positie1);
    	document.write("<br />"+positie2);
    	document.write("<br />"+positie3);
    	if(positie3==-1){positie3=string.length};
    	resultaat=string.slice(positie2,positie3);
    	document.write("<br />"+waarde+": "+resultaat);
    }
    
    var datum=new Date();
    datum.setTime(datum.getTime()+(24*60*60*1000));
    document.cookie="naam=Alexander;expires="+datum.toGMTString();
    document.cookie="woonplaats=Koksijde;expires="+datum.toGMTString();
    document.cookie="taal=Nederlands;expires"+datum.toGMTString();
    
    /* ]]> */
    </script>
    </head>
    <body>
    <script type="text/javascript">
    /* <![CDATA[ */
    document.write("cookie:"+document.cookie);
    waarde_ophalen("naam");
    waarde_ophalen("woonplaats");
    waarde_ophalen("taal");
    /* ]]> */
    </script>
    </body>
    </html>
    the output:
    Code:
    cookie:naam=Alexander; woonplaats=Koksijde; taal=Nederlands
    5
    14
    naam: Alexander
    27
    35
    woonplaats: Koksijde
    42
    -1
    taal: Nederlands
    now what I don't understand is that the 5th, 27th and 42th characters are cut off but still display in the result. These are if I am counting correctly respectively the A from Alexander, the K from Koksijde and the N from Nederlands. (starting with n from naam as 0, etc...).

    The goal of this script is to read out results from a cookie and displaying them without the "=" and ";" characters.

    Obviously it works, but I don't understand the positie2 determination and cut-off.

  2. #2
    Join Date
    Apr 2003
    Location
    Netherlands
    Posts
    21,654
    slice is (start at character, up to but not including character)
    https://developer.mozilla.org/En/Cor...ts/Array/Slice
    At least 98% of internet users' DNA is identical to that of chimpanzees

  3. #3
    Join Date
    Nov 2009
    Posts
    65
    Aha ok. Now it makes sense. Thank you

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 0.25121 seconds
  • Memory Usage 2,940KB
  • Queries Executed 13 (?)
More Information
Template Usage (31):
  • (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)bbcode_code
  • (1)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)showthread_list
  • (1)spacer_close
  • (1)spacer_open
  • (1)tagbit_wrapper 

Phrase Groups Available (6):
  • global
  • inlinemod
  • postbit
  • posting
  • reputationlevel
  • showthread
Included Files (27):
  • ./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
  • ./includes/functions_threadedmode.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 (72):
  • 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_threaded
  • showthread_threaded_construct_link
  • 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