I have cloned some password validation code (using RegExp) and adapted it to my own needs. However, none test for repeated characters. Can someone come up with a simple way to test a string for more then 2 characters that are the same? All I can come up with is a test in a loop for each letter, number and special character. There has to be a clever and easier way. TIA.
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password validation question
- Thread starter awingnut
- Start date
awingnut,
This can be tailored to fit your specs, right now it
checks for a char enter consec. is that what you are looking
for? Let us know.
2b||!2b
This can be tailored to fit your specs, right now it
checks for a char enter consec. is that what you are looking
for? Let us know.
Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><title>TEST</title>
<script>
function ckdbl(str){
for(i=0;i<str.length;i++) {
re = new RegExp(str.charAt(i)+str.charAt(i),"i");
rslt = str.match(re);
alert(rslt);
if(rslt && rslt.length > 0){
alert("More than 2 in a row"); break;}}
}
</script></head><body>
<input type="text" size="25" name="test" onChange="ckdbl(this.value);">
</body></html>2b||!2b
tbh, if you enforce draconian passwording 'rules' you might actually be lessening security (by basically forcing folks to write the password down next to their pc).
Have a read of:
and
If you really need to, it should be possible to check for doubled chars in a string. It's probably O(n^2)/2 ..
As in:
-loop through string char by char
-loop through rest of string from this char
- if you find another char the same, break & return error
-next
-next
Posting code? Wrap it with code tags: [ignore]
[ignore][/code][/ignore].
Have a read of:
and
If you really need to, it should be possible to check for doubled chars in a string. It's probably O(n^2)/2 ..
As in:
-loop through string char by char
-loop through rest of string from this char
- if you find another char the same, break & return error
-next
-next
Posting code? Wrap it with code tags: [ignore]
Code:
[/ignore][code]CodeHere- Status
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