To validate multiple Blank Textbox in the Form using JavaScript

Posted by Neeks under JavaScript category on | Views : 18313
This is the Java Script for the Validation of Your controls
<script type="text/javascript">
This function is used to provide the document elements as you needed for the operation
function getVal()
var elements = new Array();
//This loop will be executed for all the elements you have provided for the operation
for (var i = 0; i < arguments.length; i++)
var element = arguments[i];
if (typeof element == 'string')
element = document.getElementById(element);
if (arguments.length == 1)
return element;
return elements;

function testVal()
var elem = getVal('Txt1', 'Txt2', 'Txt3');
var strVal = "";
var errorVal = "";

for(var i =0; i < elem.length; i++)
if(elem[i].value == "")
if(errorVal != "")
errorVal += "\n";
errorVal += elem[i].name;
strVal += " " + elem[i].value;
if(errorVal == "")
alert("There are following errors: \n" + errorVal);


Calling the Java Script:
You have to call the JavaScript like
To validate multiple Blank Textbox in the Form using JavaScript.
There may be requirement that you have to validate the Textbox for the site.
<br/>This example will show you how you can create multiple textbox validation

I have create this Script which will be executed after the blur event of the Third text box
You will get Error for the Blank textbox.
</br><input type="text" id="Txt1" name="First Name"/>
<input type="text" id="Txt2" name = "Middle Name"/>
<input type="text" id="Txt3" name = "Last Name" onblur="testVal()" />

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