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Help with Populating a text box based on a selction from a drop down. (Java Script)

Posted on 2014-04-01
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Last Modified: 2014-04-06
Experts,

Could you please help me with the following and an example or a sample code would be really helpful.

1. I have a drop down with three options (say option1, option2, option3) and when option1 selected, I need to populate a text box.
2. If the option1 is selected and if the user changes to other two options then text should be hidden or not visible to the user
3. Nothing should happen when option2 and options3 are selected.

Thanks in advance and appreciate all your help.
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Question by:Tpaul_10
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4 Comments
 
LVL 5

Expert Comment

by:jayakrishnabh
ID: 39971367
Using jQuery..

<script>
function select1Changed() {
            if ($('#select1').val() == "one") {
                $('#textbox1').val('some value');
                $('#textbox1').show();
            } else {
                $('#textbox1').hide();
            }
        }
</script>

<select id="select1" onchange="select1Changed();">
            <option value="one">Option1</option>
            <option value="two">Option2</option>
            <option value="three">Option3</option>
        </select>
        <br />
        <input type="text" id="textbox1" value=""/>
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Author Comment

by:Tpaul_10
ID: 39973219
Thanks for the reply, appreciate it.
But I would like to generate just the text box with no value like

Enter the Other info : TEXTBOX...

Hope that is clear and would like to have it in JavaScript instead of JQuery...

Appreciate your help
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LVL 5

Accepted Solution

by:
jayakrishnabh earned 500 total points
ID: 39974152
function select1Changed() {
            var ddnSelect = document.getElementById("select1");
            var ddnSelectedValue = ddnSelect.options[ddnSelect.selectedIndex].value;
            if (ddnSelectedValue == "one") {
                document.getElementById("divOtherOption").style.display = 'block';
            } else {
                document.getElementById("divOtherOption").style.display = 'none';
            }
        }

<select id="select1" onchange="select1Changed();">
            <option value="one">Option1</option>
            <option value="two">Option2</option>
            <option value="three">Option3</option>
        </select>
        <br />
        <div id="divOtherOption">
        Enter the Other info : <input type="text" id="textbox1" value=""/>
        </div>
0
 

Author Closing Comment

by:Tpaul_10
ID: 39982119
Thank You
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