The JavaScript Source: Forms : Adding Options

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General

Add or change options on a form select menu. Simple script, includes comments.

Notes

Created by: Rick Johnson
Web Site: http://www.vistaviews.net/
Posted: August 3, 2005

Source Code

Paste this source code into the designated areas.

External file

Paste this code into an external JavaScript file named: addingOptions.js

function buildSelect(x) {
  if (x == "12") { 
    /* set choices 1 and 2 */
    option0 = new Option("  Please Select  ",0)
    option1 = new Option("Value 1",1)
    option2 = new Option("Value 2",2)
    // write them
    document.form1.fieldB.options[0] = option0
    document.form1.fieldB.options[1] = option1
    document.form1.fieldB.options[2] = option2
    return;
    }

  if (x == "34") { 
    /* set choices 3 and 4 */ 
    option0 = new Option("  Please Select  ",0)
    option1 = new Option("Value 3",1)
    option2 = new Option("Value 4",2)
    // write them
    document.form1.fieldB.options[0] = option0
    document.form1.fieldB.options[1] = option1
    document.form1.fieldB.options[2] = option2
    return;
    }

  if (x == "1234") { 
    /* set choices 1,2, 3, and 4 */ 
    option0 = new Option("  Please Select  ",0)
    option1 = new Option("Value 1",1)
    option2 = new Option("Value 2",2)
    option3 = new Option("Value 3",3)
    option4 = new Option("Value 4",4)
    // write them
    document.form1.fieldB.options[0] = option0
    document.form1.fieldB.options[1] = option1
    document.form1.fieldB.options[2] = option2
    document.form1.fieldB.options[3] = option3
    document.form1.fieldB.options[4] = option4
    return;
    }

  if (x == "00") { 
    /* set choices to none */ 
    option0 = new Option("  None  ",0)
    option1 = new Option("",1)
    option2 = new Option("",2)
    option3 = new Option("",3)
    option4 = new Option("",4)
    // write them
    document.form1.fieldB.options[0] = option0
    document.form1.fieldB.options[1] = option1
    document.form1.fieldB.options[2] = option2
    document.form1.fieldB.options[3] = option3
    document.form1.fieldB.options[4] = option4
    return;
    } 
}

Head

Paste this code into the HEAD section of your HTML document.


<script type="text/javascript" src="addingOptions.js"></script>

Body

Paste this code into the BODY section of your HTML document


<form name="form1">
<select name="fieldB">
<option size="15">  Select from below  </option>
</select>
<br>
<input type="radio" name="choice" onclick="buildSelect(12)">Add choices 1 and 2<br>
<input type="radio" name="choice" onclick="buildSelect(34)">Add choices 3 and 4<br>
<input type="radio" name="choice" onclick="buildSelect(1234)"> Add all choices<br>
<input type="radio" name="choice" onclick="buildSelect(00)">Clear all choices
</form>

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Source Code

External file

Head

Body

User Comments

3. From: Jeremy
Sloppy
06/19/2007 12:53:53

2. From: AsianGrad
02/28/2007 22:07:24

1. From: Hayhay
02/04/2007 17:44:19

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Navigation Menu

Internet.commerce

Internet.com

Developer Channel

Great Sites

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General

Notes

Source Code

External file

Head

Body

User Comments

3. From: JeremySloppy06/19/2007 12:53:53

2. From: AsianGrad02/28/2007 22:07:24

1. From: Hayhay02/04/2007 17:44:19

Whitepapers and eBooks

Webcasts

Downloads and eKits

Tutorials and Demos

3. From: Jeremy
Sloppy
06/19/2007 12:53:53

2. From: AsianGrad
02/28/2007 22:07:24

1. From: Hayhay
02/04/2007 17:44:19