Validate select tag Items
Validate select tag Items
Hi, How to validate addition of two numbers of two different "select" tag items in JavaScript..?
Thanks in advance.
View Answers
December 7, 2012 at 3:38 PM
Here is an example that validates HTML select tag and find the addition of two numbers selected from the select tag.
<html>
<script language = "Javascript">
function validate(){
if(document.form.n1.selectedIndex==""){
alert ( "Please select first number!" );
return false;
}
if(document.form.n2.selectedIndex==""){
alert ( "Please select second number!" );
return false;
}
var v1=document.form.n1.value;
var v2=document.form.n2.value;
var sum=parseInt(v1)+parseInt(v2);
alert("Sum of two numbers: "+sum);
return true;
}
</script>
<form name="form" method="post" onSubmit="return validate()">
<pre>
Select Number1 <select name="n1">
<option value="Select">Select</option>
<option value="10">10</option>
<option value="20">20</option>
<option value="30">30</option>
<option value="40">40</option>
<option value="50">50</option>
</select>
Select Number2 <select name="n2">
<option value="Select">Select</option>
<option value="60">60</option>
<option value="70">70</option>
<option value="80">80</option>
<option value="90">90</option>
<option value="100">100</option>
</select>
<input type="submit" name="Submit" value="Submit">
</pre>
</form>
</html>
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