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Thread: Create select options using javascript?

  1. #1
    Join Date
    Mar 2009
    Location
    Florida
    Posts
    7

    Create select options using javascript?

    I have a form that uses <select> tag that drops down a list of teams. I also have an array of 32 teams that I would like to use to populate this list dynamically. Can someone point me in the right direction?

    Here is my array:
    var teamArray = new Array ();
    teamArray[0] = "Select Team";
    teamArray[1] = "Smith-Woods";
    teamArray[2] = "Jones-Ebert";
    teamArray[3] = "Bohme-Quester";

    And here is my select code:
    <select name="team" onchange="getScorecard(this)">
    <option value="" selected>Select a team</option>
    <option value="1">Smith-Woods</option>
    <option value="2">Jones-Ebert</option>
    <option value="3">Bohme-Quester</option>
    </select>

    I assume I need to replace the <option value> code with a div that is then populated by a function. But I'm not sure how to write the html to the div tag from a function.

  2. #2
    Join Date
    Dec 2005
    Location
    TX
    Posts
    7,931
    This uses a radio button to select the list to populate with, but should be fairly easy to modify to read your dynamic list.

    See post #4 of http://www.webdeveloper.com/forum/sh...=populate+drop

  3. #3
    Join Date
    Mar 2009
    Location
    Florida
    Posts
    7

    Still Confused

    Thanks JMRKER, I tried, but I can't seem to follow the thread you sent. I think the template tags are too much for me.

    I really have 2 questions for the group. I believe I created the array fine, but I don't know how to do 2 things:

    1) Write the option list from a function. Here is my feeble attempt at the writing function:

    function populateList() {
    var arLen=teamArray.length;
    var newlist = "";
    for ( var i=1, len=arLen; i<len; ++i ){
    newList = newlist + '<option value="' + i + '">' + teamArray[i]+'</option>';
    }
    document.getElementById('optionDiv').innerHTML = newList;
    }

    And here is my HTML:
    <select name="team" onchange="getScorecard(this)">
    <option value="" selected>Select a team</option>
    <div id="optionDiv"></div>
    </select>


    2) The second question I have is how do I execute the function to load the list. I assumed this needs to be done on page load. I've tried all of the following:

    1) <body onload="populateList();">
    2) Within the <head> tag: <script type="text/javascript">_spBodyOnLoadFunctionNames.push("populateList"); </script>
    3) Within the <form> tag: <script language="javascript"> window.onload = populateList; </script>

  4. #4
    Join Date
    Apr 2003
    Location
    Netherlands
    Posts
    21,654
    Code:
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
    <html lang="en">
    <head>
    <title></title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    
    <script type="text/javascript">
    function populateList() {
    var teamArray = ["Select a Team", "Smith-Woods", "Jones-Ebert", "Bohme-Quester"];
    var arLen=teamArray.length;
    for(var i=0; i<arLen; i++){
        document.form1.team.options[i]=new Option(teamArray[i], i);
        }
    }
    
    window.onload=populateList;
    </script>
    
    <style type="text/css">
    </style>
    
    </head>
    <body>
    <form action="#" method="" name="form1">
    <div>
    <select name="team" onchange="getScorecard(this)">
    </select>
    </div>
    </form>
    </body>
    </html>
    At least 98% of internet users' DNA is identical to that of chimpanzees

  5. #5
    Join Date
    Mar 2009
    Location
    Florida
    Posts
    7

    Wow!

    Thanks Fang. This is really good.

    I never would have gotten here. You don't want to know the direction I was going off into..... Obviously, I need to understand the DOM a lot better.

    Mucho Thanks!

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