wood burning stoves 2.0*
The moose likes HTML, CSS and JavaScript and the fly likes taking only numbers and decimals as input Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Android Security Essentials Live Lessons this week in the Android forum!
JavaRanch » Java Forums » Engineering » HTML, CSS and JavaScript
Bookmark "taking only numbers and decimals as input" Watch "taking only numbers and decimals as input" New topic
Author

taking only numbers and decimals as input

Punit Shrestha
Greenhorn

Joined: Nov 26, 2012
Posts: 5
Hello everyone,

I am new in this field of programming field and am stuck in this simple problem. I have made a simple form with the function to take input as numbers only. however, it only takes positive numbers as input but does not cater negative values. I have used the function from one of the posts. Also I need to use the data input by user as the input value in another function query () but do not have idea about how to do it. If someone could help me in this matter, please help. Thanking you in advance..

<html>
<head>
<script>
function query() {
window.location.assign("http://localhost:8080/geoserver/wfs?VERSION=1.1.0&REQUEST=GetFeature&SERVICE=WFS&TYPENAME=tasmania_state_boundaries&crs=EPSG:4326&BBOX=UX.val,UY.val,LX.val,LY.val")
}
</script>
</head>
<body>
<script>
function validate(evt) {
var theEvent = evt || window.event;
var key = theEvent.keyCode || theEvent.which;
key = String.fromCharCode( key );
var regex = /[0-9]|\./;
if( !regex.test(key) ) {
theEvent.returnValue = false;
if(theEvent.preventDefault) theEvent.preventDefault();
}
}
</script>
<p> Bounding Box </p>
<form>
Upper Left X Co-ordinate: <input type="text" onkeypress="validate(event)" name="UX"/>
Upper Left Y Co-ordinate: <input type="text" onkeypress="validate(event)" name="UY"><br/>
Lower Right X Co-ordinate: <input type="text" onkeypress="validate(event)" name="LX">
Lower Right Y Co-ordinate: <input type="text" onkeypress="validate(event)" name="LY"><br/>
<input type="button" name="Query" value="Query" onclick="query()">
</form>
</html>
Rakesh Keerthi
Ranch Hand

Joined: Jul 16, 2012
Posts: 136
Hi Punit,

please replace with . and it will take negative values also.

Happy Coding :-)
Punit Shrestha
Greenhorn

Joined: Nov 26, 2012
Posts: 5
Thank you...
Rakesh Keerthi
Ranch Hand

Joined: Jul 16, 2012
Posts: 136
you are welcome. please close this by clicking solved.
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: taking only numbers and decimals as input
 
Similar Threads
decimal point restriction
help with validation/ 2 functions on submit.
How to detect escape key press in browser
Javascript in Netscape4.7
Financial Year Table