SitePoint Sponsor

User Tag List

Results 1 to 2 of 2
  1. #1
    SitePoint Zealot
    Join Date
    Feb 2002
    Posts
    123
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    check to see if a variable is set?

    i know how to check if a variable is set in PHP, how do you do it in javascript?

    is there a function or method for it?

  2. #2
    Web-coding NINJA! silver trophy beetle's Avatar
    Join Date
    Jul 2002
    Location
    Dallas, TX
    Posts
    2,900
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    if (typeof variable == 'undefined') alert("This variable not set!");
    beetle a.k.a. Peter Bailey
    blogs: php | prophp | security | design | zen | software
    refs: dhtml | gecko | prototype | phpdocs | unicode | charsets
    tools: ide | ftp | regex | ffdev





Bookmarks

Posting Permissions

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