Error handling

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Sakai

Error handling
1 Answer(s) 3 years and 5 months ago
Posted in : Java Server Faces Questions

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December 18, 2009 at 10:55 AM

Hi Friend,

Modify your code:

1)index.jsp:

<html>
<head>
<script src="validation.js" type="text/javascript"></script>
</head>
<form method="post" name="form" onsubmit="return validate();" action="../DropDown" >
<table border="0">
<tr align="left" valign="top">
<td> Name: </td>
<td><input type="text" name="name"/> </td>
</tr>
<tr align="left" valign="top">
<td>Presentation: </td>
<td><input type="text" name="score"/></td>
</tr>
</table>
<select name="Feedback" multiple="multiple">
<option> "Poor"</option>
<option>"Good"</option>
<option>"Very Good"</option>
<option>"Excellent"</option>
</select>
<input type="Submit" value="Submit">
</form>
</html>

2)validation.js:
function checkName(text) {
if(isNaN(text)){ return 1;}
else{alert("Please enter a valid name. The only charachters accepted are A - Z and a - z");return 0;}
}
function checkNumber(num) {
if(isNaN(num)){alert("Enter only numbers. The only characters permitted are 0 to 9"); return 0;}
else{return 1;}
}

function validate(){
var uname=document.form.name;
var uscore=document.form.score;

if ((uname.value==null)||(uname.value=="")){
alert("Please Enter your Name")
uname.focus()
return false
}

if (checkName(uname.value)==false){
uname.value=""
uname.focus()
return false
}
if (uname.value.length>25){
alert("Should not have more than 25 characters!")
return false;
}

if ((uscore.value==null)||(uscore.value=="")){
alert("Please Enter your score")
uscore.focus()
return false;
}
if (checkNumber(uscore.value)==false){
uscore.value=""
uscore.focus()
return false;
}
if ((uscore.value>100)||(uscore.value<0)){
alert("Score must be in between 0 amd 100")
return false;
}

return true;

}

Thanks

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