Input Field Validation If Adjoining Checkbox Is Checked

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I have a Form With Multiple Values For A Common Field "service". I have created an option "Other" For selection. And I want to validate with javascript input field next to "other" option. Code is as follows

C#

<label for="service" style="font-size:15px; vertical-align:top;">Service You Want*</label>

<input type="checkbox" name="service[]" id="Complete new set up " value="Complete new set up ">Complete new set up<br>
<input type="checkbox" name="service[]" id="Standardization" value="Standardization ">Standardization<br>
<input type="checkbox" name="service[]" id="Training" value="Training">Training <br>
<input type="checkbox" name="service[]" id="Trouble shooting " value="Trouble shooting ">Trouble shooting <br>
<input type="checkbox" name="service[]" id="Addition of new techniques" value="Addition of new techniques">Addition of new techniques<br>
<input type="checkbox" name="service[]" id="Hands on training" value="Hands on training">Hands on training<br>
<input type="checkbox" name="service[]" id="Seminars & Workshops" value="Seminars & Workshops">Seminars & Workshops<br>
<input type="checkbox" name="service[]" id="Preparations of documents" value="Preparations of documents ">Preparations of documents <br>
<input type="checkbox" name="service[]" id="Other"  önclick="enable_text(this.checked)"  value="other" >Other

<input type="text" name="other_text"><br>

For "Other" option, Input Text Field get Enabled if "other" options is checked.
working javascript used to enable input field is :

C#

<script>
    function enable_text(status)
    {
        status=!status;
        document.formname.other_text.disabled = status;
    }
</script>

javascript used To select atleast one service is working and it is as follows:

C#

<script>
    var chks = document.getElementsByName(&amp;#39;service[]&amp;#39;);
    var hasChecked = false;
    for (var i = 0; i &amp;lt; chks.length; i++)
    {
        if (chks[i].checked)
        {
            hasChecked = true;
            break;
        }
    }
    if (hasChecked == false)
    {
        alert(&amp;quot;Please Select At Least One Service.&amp;quot;);
        return false;
    }
</script>

But I am not getting how to validate input field if "Other" option from checkboxes is Checked.

Posted 25-Jun-14 18:59pm

Manish Joshi

Updated 25-Jun-14 19:42pm

Thanks7872

v5

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DamithSL · Answer 1 · 2014-06-25T19:26:00

Solution 1

HTML

<input type="checkbox" name="others"  önclick="enable_text(this.checked)" />
<input type="text" id="other_text" />

JavaScript

function enable_text(status)
{
  document.getElementById("other_text").disabled = !status;
}

DEMO[^]

EDIT

JavaScript

if (document.getElementById("Other").checked && isBlank(document.getElementsByName('other_text').value)) {
    alert("your message......... ");
    return false;
}

use below function to check blank input

JavaScript

function isBlank(str) {
    return (!str || /^\s*$/.test(str));
}

Posted 25-Jun-14 19:26pm

DamithSL

Updated 25-Jun-14 20:03pm

v2

Comments

Manish Joshi 26-Jun-14 1:32am

No no...I am asking how to validate that this input field is not Empty if "other" is checked / selected. how to alert if user slected "Other'Option Byt input field next to it kept empty...?

Manish Joshi 26-Jun-14 2:26am

yes...sir, your edited code worked for me...Only I added one more line in code to focus other_text field...
if (document.getElementById("Other").checked && isBlank(document.getElementsByName('other_text').value)) {
alert("your message......... ");
document.contactus.other_text.focus();
return false;

Manish Joshi 26-Jun-14 2:26am

thank you very much

Manish Joshi 26-Jun-14 2:48am

Resp Sir, Even After filling some text in "Other_text" field, It is Again n again Alerting..."your message....."

Ashok8033 · Answer 2 · 2014-06-25T19:40:00

<html>

<head>

</head>
<body>
<label for="service" style="font-size:15px; vertical-align:top;">Service You Want*</label>

<input type="checkbox" name="service[]" id="Complete new set up " value="Complete new set up ">Complete new set up<br>
<input type="checkbox" name="service[]" id="Standardization" value="Standardization ">Standardization<br>
<input type="checkbox" name="service[]" id="Training" value="Training">Training <br>
<input type="checkbox" name="service[]" id="Trouble shooting " value="Trouble shooting ">Trouble shooting <br>
<input type="checkbox" name="service[]" id="Addition of new techniques" value="Addition of new techniques">Addition of new techniques<br>
<input type="checkbox" name="service[]" id="Hands on training" value="Hands on training">Hands on training<br>
<input type="checkbox" name="service[]" id="Seminars & Workshops" value="Seminars & Workshops">Seminars & Workshops<br>
<input type="checkbox" name="service[]" id="Preparations of documents" value="Preparations of documents ">Preparations of documents <br>
<input type="checkbox" id="other" name="other" id="Other" value="other" >Other

<input type="text" id="other_text" name="other_text"><br>

<input type="button" value="Click Here" onclick="javascript:return validateForm()">
</body>
<html>

<script>
function validateForm( )
{
var chks = document.getElementsByName('service[]');
var other = document.getElementsByName('other');
var hasChecked = false;
for (var i = 0; i < chks.length; i++)
{
if (chks[i].checked)
{
hasChecked = true;
break;
}
}
if((!hasChecked)&& !(document.getElementById('other').checked))
{
alert("Please chaek any of one");
} else if(document.getElementById('other').checked)
{

if (document.getElementById('other_text').value == '') {
alert("Enter the other details ");
document.getElementById('other_text').focus();
return false;
}

}

return true;
}
</script>

Hai,

Try this Code