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Help with Javascript Function (Case Sensitive)

Posted on 2012-04-04
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Last Modified: 2012-04-21
I have some code that prevents emails being entered into a web based application with certain domains.
It works if the emails are entered as defined, however it is case sensitive and emails can be entered by capitalising any of the letters

////////////////////Helper Functions Start/////////////////////// 

function emailvalidation(x,y) 

{ 
if (x.length>0) 
{ 
apos=x.indexOf("@"); 
dotpos=x.lastIndexOf("."); 
lastpos=x.length-1; 

if (apos<1 || dotpos-apos<2 || lastpos-dotpos>3 || lastpos-dotpos<2 || x.replace("@msn.", "").length < x.length || x.replace("@gmail.", "").length < x.length || x.replace("@hotmail.", "").length < x.length || x.replace("@yahoo.", "").length < x.length) 

{ 
Valid = false; 

ErrorStr = CRM.GetTrans("colnames",y)+ " ["+x+"] "+ CRM.GetTrans("GenCaptions","BadEmailInternal"); 
} 
} 
} 

/////////////////////Helper Functions End/////////////////////// 


function InsertRecord() 


{ 

// Handle insert record actions here 

emailvalidation(FormValues("emai_emailaddress"),"emai_emailaddress"); 

} 

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So if the user enters me@Yahoo.com, its not working.
Is it easy to modify the code to disregards casing?

Cheers in advance,
0
Comment
Question by:MimUK
4 Comments
 
LVL 16

Accepted Solution

by:
Peter Kwan earned 300 total points
ID: 37805007
You may use toLowerCase in this case. For example,

x.toLowerCase().replace("@msn.", "").length < x.length
0
 
LVL 6

Expert Comment

by:ingriT
ID: 37805010
try this:

apos=x.indexOf("@"); 
dotpos=x.lastIndexOf("."); 
lastpos=x.length-1;

// INSERT THIS LINE
x = x.toLowerCase();

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e-mail isn't case sensitive, so it shouldn't be an issue.
0
 
LVL 20

Expert Comment

by:Proculopsis
ID: 37805254


//Try this instead:

if (apos<1 || dotpos-apos<2 || lastpos-dotpos>3 || lastpos-dotpos<2 || x.match( /@(msn|gmail|hotmail|yahoo)\./i ) != null )
0
 
LVL 63

Expert Comment

by:Zvonko
ID: 37812071
Here the complete Helper function:
function emailvalidation(x,y) { 
  if (x.length>0){
    if(!(x.replace(/\@(msn|gmail|hotmail|yahoo)\./mi,"").match(/^\w+([\.\-]\w+)*\@\w+([\.\-]\w+)*\.[a-z]{2,4}$/i))){ 
      Valid = false; 
      ErrorStr = CRM.GetTrans("colnames",y)+ " ["+x+"] "+ CRM.GetTrans("GenCaptions","BadEmailInternal"); 
    }
  } 
} 

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