Selecting items in a listbox

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  • Mark
    #1

    Selecting items in a listbox

    Hi - is it possible to pass a comma delimeted list to a javascript
    function, which will then loop through the list, and check against a
    listboxs items, and if the value in the list, corresponds to an item in
    the listbox, the listbox item should be 'selected' - I'd like this to
    happen for a multiple select list box.

    Something along the lines of (sorry, I'm not knowledgable in JS just
    yet, but need to solve the problem):

    function selItems()
    {
    selItemsInList( '1,4,4,7,8');
    }

    selItemsInList( str)
    {
    for each checkitem in str
    {
    for each item in selectlist
    {
    if item.value == checkitem.value
    {
    selectlist.item .checked;
    }
    }
    }

    Thanks for any help,

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    Tags: None
    • Mark
      #2
      Re: Selecting items in a listbox

      Hi - I've managed to get this working to an extent - I'm just not sure
      how to get a comma delimmetted list, and iterate through that - here's
      what I have so far, taking info from hard coded variables:

      function pop(inForm)
      {
      var option0 = "1" //this is the part I want to be read from a comma
      list
      var option1 = "6"
      var option2 = "3"
      for (var i=0; i < 3; i++) {
      for (var x=0; x < 3; x++)
      {
      if (inForm.lbMT.op tions[i].value==eval("o ption" + x))
      {
      alert("equal so selecting");
      inForm.lbMT.opt ions[i].selected=true;
      }
      }
      }
      }




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        Comment

        • Matt Kruse
          #3
          Re: Selecting items in a listbox

          "Mark" <anonymous@devd ex.com> wrote:[color=blue]
          > Hi - is it possible to pass a comma delimeted list to a javascript
          > function, which will then loop through the list, and check against a
          > listboxs items, and if the value in the list, corresponds to an item in
          > the listbox, the listbox item should be 'selected'[/color]

          You can use my general setInputValue() function on multiple select boxes,
          like this:
          setInputValue(d ocument.forms[0].mySelect,"a,d, h");

          The function, along with others, can be found in my validations lib at:
          Page not found · GitHub Pages
          http://www.mattkruse.com/javascript/validations/


          --
          Matt Kruse
          Javascript Toolbox: http://www.mattkruse.com/javascript/


            Comment

            • Dennis M. Marks
              #4
              Re: Selecting items in a listbox

              In article <407fca29$0$206 $75868355@news. frii.net>, Mark
              <anonymous@devd ex.com> wrote:
              [color=blue]
              > Hi - I've managed to get this working to an extent - I'm just not sure
              > how to get a comma delimmetted list, and iterate through that - here's
              > what I have so far, taking info from hard coded variables:
              >
              > function pop(inForm)
              > {
              > var option0 = "1" //this is the part I want to be read from a comma
              > list
              > var option1 = "6"
              > var option2 = "3"
              > for (var i=0; i < 3; i++) {
              > for (var x=0; x < 3; x++)
              > {
              > if (inForm.lbMT.op tions[i].value==eval("o ption" + x))
              > {
              > alert("equal so selecting");
              > inForm.lbMT.opt ions[i].selected=true;
              > }[/color]
              Set an array like this:

              var optionList = ["a","b","c" , etc];
              for (x=0;x<optionLi st.length;x++) {
              if (optionList[x] == ???) dothis
              };

              --
              Dennis M. Marks
              http://www.dcs-chico.com/~denmarks/

              Replace domain.invalid with dcsi.net


              -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
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                Comment

                • Mark
                  #5
                  Re: Selecting items in a listbox

                  Hi Matt - thank you for this.

                  I tried the setInputValue on your site, and entered 1,3 and "1,3" - but
                  only one of the select items hilited - have I entered the numbers
                  incorrectly?

                  Thanks again for the help,



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                    Comment

                    • Mark
                      #6
                      Re: Selecting items in a listbox

                      Sorted - thanks for the help:

                      <script language="JavaS cript">
                      function pop()
                      {
                      var optionList = arguments;
                      var ddl=document.ge tElementById("l bMT");
                      for (var i=0; i < 3; i++) {
                      for (var x=1;x<optionLis t.length;x++)
                      {
                      if (ddl.options[i].value==optionL ist[x])
                      {
                      ddl.options[i].selected=true;
                      }
                      }
                      }
                      }

                      </script>
                      </head>
                      <body>
                      <form>
                      <select name="lbMT" id="lbMT" size="10" multiple>
                      <option value="1">one</option>
                      <option value="2">two</option>
                      <option value="3">three </option>
                      </select>
                      <INPUT TYPE="button" VALUE="Populate Select List"
                      onClick='pop(th is.form, 19,20,1,3,3,0)' >
                      </form>
                      </body>




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