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Java Script Code Base
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Check for Special characters
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Code Samples
Java Script
Check for Special characters
Code Resource
Author:
Durga Prasad
Difficulty Level
:
Published:
5th Nov 2006
Read:
3858 times
Filed in:
Java Script
Add Comment
Check for Special characters in the text box
Sample Code
<
html
>
<
head
>
<
script language
=
"javaScript"
>
function
validate_field
(
field
)
{
value
=
field.
value
;
var
invalids
=
"!@#$%"
'^&*()~,'
<>/?;:|
[
]
{
}
+=
`
*
";
for(i=0; i<invalids.length; i++)
{
if(value.indexOf(invalids.charAt(i)) >= 0 )
{
alert(field.name+"
Contains Invalide characters
");
break;
}
}
}
</script>
</head>
<body>
<form name="
ValidateForm
">
Name:<input type="
text
" name="
Name
">
<input type="
button
" value="
Check
" onClick="
validate_field
(
Name
)
">
</body>
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