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input=text -> validate on xx,x 1
- Thread starter Bramvg
- Start date
Just a quick one from my head, haven't tried it...
First of all, set the maxlength=4, so they don't write anything else.
Second of all,
if(
isNaN(txtfield.charAt(0))||
isNaN(txtfield.charAt(1))||
txtfield.charAt(2) !=","||
isNaN(txtfield.charAt(3))
)
{
//error handling, format is not matching
}
else
{
//do what ever you want to do, format is matching
}
or something this way...??
My codes look like something a kid wrote
I have absolutely no idea what I am talking about
Somehow I still manage to make it work
First of all, set the maxlength=4, so they don't write anything else.
Second of all,
if(
isNaN(txtfield.charAt(0))||
isNaN(txtfield.charAt(1))||
txtfield.charAt(2) !=","||
isNaN(txtfield.charAt(3))
)
{
//error handling, format is not matching
}
else
{
//do what ever you want to do, format is matching
}
or something this way...??
My codes look like something a kid wrote
I have absolutely no idea what I am talking about
Somehow I still manage to make it work
-
1
- #3
hie
xx,x. ... is that last dot neccessary?
what are those x-s ?
if they are digits, here you are:
<script>
var str="12,7."
var re=/^\d{2}\,\d\.$/
if (str.match(re)) alert("yup"
else alert("nope"
</script>
for any word character there would be \w instead of \d
& so on Victor
xx,x. ... is that last dot neccessary?
what are those x-s ?
if they are digits, here you are:
<script>
var str="12,7."
var re=/^\d{2}\,\d\.$/
if (str.match(re)) alert("yup"
else alert("nope"
</script>
for any word character there would be \w instead of \d
& so on Victor
- Thread starter
- #4
hi Vituz
I'm sorry, but I don't understand exactly what you've sent.
Most likely because I'm not familiar with jscript.
anyhow, I explain.
I have a text field, called 'taxes'.
When a user enters e.g.
147 it should be changed into 14,7 OR
1,47 it should be changed automatically into 14,7 OR
14 it should be changed into 14,0
Meaning:
Min (and max) 3 numbers (or 4 chars)
and the format is xx,x
= [number][number],[number]
Any help more than welcome
bram
I'm sorry, but I don't understand exactly what you've sent.
Most likely because I'm not familiar with jscript.
anyhow, I explain.
I have a text field, called 'taxes'.
When a user enters e.g.
147 it should be changed into 14,7 OR
1,47 it should be changed automatically into 14,7 OR
14 it should be changed into 14,0
Meaning:
Min (and max) 3 numbers (or 4 chars)
and the format is xx,x
= [number][number],[number]
Any help more than welcome
bram
doublehelix
IS-IT--Management
Bramvg,
He is pattern matching with regular expressions - which is the easiest way to solve your problem. Check this link out...
He is pattern matching with regular expressions - which is the easiest way to solve your problem. Check this link out...
ok, got it 
here is an example:
~~~~~~~~
<html><head><title>validate to dd,d</title>
<script>
<!--
function validate(obj){
/*regular expression:
^ - begining of the string
\d - any digit (0..9)
{x} - repeat x times
\, - just a ,
*/
var re=/^\d{2}\,\d$/
var str=obj.value
if (!str) {alert("enter something"obj.focus(); return false}
/*
if that expression would match the string,
then everything's good, we don't have to change anything
*/
if (!str.match(re)){
/* everythings baaaad, we have to get up, put our fingers
out of our nose & do something (should we?) */
//kicking out everything but digits
var tempstr=str.replace(/\D/g,'')
var len=tempstr.length
if (len<3){
//too short - lets add zeros
for (var ii=len; ii<=3; ii++) tempstr+="0"
}else{
//too long - would be truncated
tempstr=tempstr.substr(0,3)
}
//making it look like you want:
tempstr=tempstr.replace(/(\d{2})(\d)/,'$1,$2')
obj.value=tempstr
}
}
//-->
</script>
</head>
<body>
<form name="form1">
<input type=text name=txt onchange="validate(this)"><br>
<input type=button onclick="validate(this.form.txt)" value="validate">
</form>
</body>
</html>
~~~~~~~~ Victor
here is an example:
~~~~~~~~
<html><head><title>validate to dd,d</title>
<script>
<!--
function validate(obj){
/*regular expression:
^ - begining of the string
\d - any digit (0..9)
{x} - repeat x times
\, - just a ,
*/
var re=/^\d{2}\,\d$/
var str=obj.value
if (!str) {alert("enter something"
;obj.focus(); return false}/*
if that expression would match the string,
then everything's good, we don't have to change anything
*/
if (!str.match(re)){
/* everythings baaaad, we have to get up, put our fingers
out of our nose & do something (should we?) */
//kicking out everything but digits
var tempstr=str.replace(/\D/g,'')
var len=tempstr.length
if (len<3){
//too short - lets add zeros
for (var ii=len; ii<=3; ii++) tempstr+="0"
}else{
//too long - would be truncated
tempstr=tempstr.substr(0,3)
}
//making it look like you want:
tempstr=tempstr.replace(/(\d{2})(\d)/,'$1,$2')
obj.value=tempstr
}
}
//-->
</script>
</head>
<body>
<form name="form1">
<input type=text name=txt onchange="validate(this)"><br>
<input type=button onclick="validate(this.form.txt)" value="validate">
</form>
</body>
</html>
~~~~~~~~ Victor
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