Solved

validation using javascript

Posted on 2014-02-04
6
281 Views
Last Modified: 2014-02-19
Hi Experts,

I  need  to validate input fields using javascript  and  want sample code (using functions)  for the following fields in javascript so that I can use these functions in other pages too.

1)Validate numbers only

a)should not allow alphabets or special characters
b)should not start with Zero
c)maximum numbers allowed is 9

Valid Entries: 11111,123,100000000,1 etc

Invalid Entries:0111(started with zero),1234567891(10 digits) etc

2)Validate Name

a)Should not contain special characters

valid Entries:abc def,ABC DEF, ddsfas dfasdfa etc
Invalid Entries: 12ab asd (contain digits), ##$@ dfasdf (contain special characters) etc
0
Comment
Question by:ksd123
  • 4
  • 2
6 Comments
 
LVL 6

Expert Comment

by:Mahesh Bhutkar
ID: 39832039
You can use regular expressions in your javascript to achieve this.

Here is an good example,
http://www.regular-expressions.info/javascriptexample.html

For Good basic knowledge,
http://www.w3schools.com/js/js_obj_regexp.asp

For Regular expressions detailings,
https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/RegExp
0
 

Author Comment

by:ksd123
ID: 39832075
I need sample working code for the above two input fields using javascript
0
 
LVL 6

Accepted Solution

by:
Mahesh Bhutkar earned 500 total points
ID: 39832096
You can use common function for both validation,

function MatchClick(strValue, strMatchPattern) {
      var rematch = new RegExp(strMatchPattern);

      //Test match
      if(strValue.match(rematch))
            return true;
      else
            return false;
}

Where strMatchPattern will be pattern/regex for each validation which you have to pass as follows,

//To Validate Name
var alphanum = "^([a-zA-Z0-9 ])*$";

//To Validte Number
var nummax9 =  "^([1-9][0-9]{0,8})*$";

//Invoke MatchClick function
MatchClick("100000000", alphanum);
MatchClick("ddsfas dfasdfa", nummax9 );
0
Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

 

Author Comment

by:ksd123
ID: 39835254
Hi Experts,

I am trying to validate below conditions using javascript  and having some issues. can anyone correct the errors. Here is the url validate number

1)Validate numbers only

a)should not allow alphabets or special characters
b)should not start with Zero
c)maximum numbers allowed is 9
0
 
LVL 6

Expert Comment

by:Mahesh Bhutkar
ID: 39835297
You can validate using above regular expression ^([1-9][0-9]{0,8})*$ in javascript.

I already provided how to validate in javascript.
0
 
LVL 6

Expert Comment

by:Mahesh Bhutkar
ID: 39835306
You are passing text1 element & not it's value.

Change it to,
onclick="allnumericplusminus(document.form1.text1.value)"
0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Have you tried to learn about Unicode, UTF-8, and multibyte text encoding and all the articles are just too "academic" or too technical? This article aims to make the whole topic easy for just about anyone to understand.
This article describes how to create custom column layout styles for Bootstrap. The article uses 5 columns to illustrate the concept, but the principle can be extended to any number of columns.
Video by: Mark
This lesson goes over how to construct ordered and unordered lists and how to create hyperlinks.
Learn how to create flexible layouts using relative units in CSS.  New relative units added in CSS3 include vw(viewports width), vh(viewports height), vmin(minimum of viewports height and width), and vmax (maximum of viewports height and width).

810 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question