https://oneoptimumlifestyles.com/myaccountv2/js/formvalidations.js

1// JavaScript Document
2//---formvalidations.js
3//---takes care of most form validations...
4
5//check the text value//
6function checkitem(item, fdesc) { 
7	var errorstr = "";
8	if (item.value == "" || checkblanks(item.value) == true)  {
9   		if (fdesc != "") { 
10   			errorstr = "'" + fdesc + "' is required.\n";
11		}
12   }
13   return errorstr;
14 }
15
16// following looks for all blanks in a string - typical of checking//
17function checkblanks(item)  {
18  var isblank = true;
19  for (i = 0; i < item.length; i++) {
20    if (item.charAt(i) != " ") {
21      isblank = false;  }
22  } 
23  return isblank;
24}
25
26// check for valid emails....
27function checkemail(item) {
28  var goodmail = true;
29  var addr = item.value;
30  var invchar = " /:,;";
31  var errorstr = "";
32  var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
33  var emailFilter=/^.+@.+\..{2,3}$/;
34  for (i=0; i<invchar.length; i++)  {
35	badchar = invchar.charAt(i);
36	if (addr.indexOf(badchar,0) > -1)  {
37   		goodmail = false;
38	}
39  }
40  atpos = addr.indexOf("@",1);
41  if (atpos == -1) {
42	goodmail = false;
43  }
44  else  {
45	perpos = addr.indexOf(".",atpos);
46	if (perpos == -1)  {
47		goodmail = false;
48	} else if (perpos + 3 > addr.length)  {
49		goodmail = false;
50	} else if (addr.match(illegalChars)) {
51		goodmail = false;
52	} else if (!(emailFilter.test(addr))) { 
53		goodmail = false;
54    }
55  }
56  if (goodmail == false) {
57    errorstr = "Email address is not valid.\n";
58  }
59  return errorstr;
60}