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rohinimuthuvelan
I want to validate textbox based on dropdown menu consisting of many options. For eg Dropdown consists of option (1,2,3,4) if "1" is selected textbox should validate a value 0f "2300" through a submit button "Evaluate". Please give me the sample code for the above problem using only javascript
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June 26, 2012 at 12:04 PM
Here is an example that validate the textbox value.
<HTML>
<SCRIPT>
function validate(){
var v=document.getElementById("t").value;
var e = document.getElementById("sel");
var st = e.options[e.selectedIndex].text;
if(st=="1"&&v!="2300"){
alert("Value should be 2300!");
document.getElementById("t").value=" ";
}
}
</SCRIPT>
</HTML>
<form name="f" onsubmit="return validate();">
<pre>
<select id="sel">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<input type="text" id="t">
<input type="submit" value="submit">
</html>
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