Develop Reference

Getting Lexer Error with AngularJS and ng-pattern

I'm getting the following error at runtime:
Error: [$parse:lexerr] Lexer Error: Unexpected next character at columns 11-11 [\] in expression [[0-9]{1,4}(\.[0-9]{1,3})?].
My HTML looks like this
<input type="text"
class="form-control"
name="amount"
ng-pattern="{{ctrl.pattern}}"
ng-model="ctrl.amount">
The assignment in my AngularJS controller is as follows:
ctrl.pattern = '[0-9]{1,4}(\\.[0-9]{1,3})?';
From what I understand AngularJS appends the ^ and $ at the beginning and end of regular expressions and that works great. The problem is that the regex literal in the middle of the expression is not being accepted. I want to dot to be accepted as a literal and not as any character so I need a way to escape it yet the lexer does not to like it. Is there a way around this?

This issue is already reported here but they are not going to fix it as according to them its a uncommon usecase.
Do it this way instead:
ctrl.pattern = /^[0-9]{1,4}([.][0-9]{1,3})?$/;
This way the regex will be evaluated as a regex object instead of a string parameter to RegExp in which case we will need to add ^,$

unterminated regular expression literal js error

I have added jQuery validator add method for the presence of http check in url field.
JS
jQuery.validator.addMethod("valid_url", function(value, element) {
if(!/^(https?|ftp):\/\/i.test(val))
val = 'http://'+val; // set both the value
$(elem).val(val); // also update the form element
}
My Console throws
"unterminated regular expression literal" error in the following line.
if(!/^(https?|ftp):\/\/i.test(val))
What my mistake is?

Regular expression literals should be surrounded by the delimiters(/). There's no terminating delimiter:
/^(https?|ftp):\/\//i
// ^
For example:
>> /^(https?|ftp):\/\//i.test('http://stackoverflow.com/')
true
>> /^(https?|ftp):\/\//i.test('telnet://stackoverflow.com/')
false

You can also get this error if you're simply attempting to concatenate a variable that utilizes a regular expression and forget a quotation mark somewhere.

jmeter code to remove crlf from an extracted Url

I need to remove trailing crlf from a string in jmeter. I have used the following function
${__javaScript('${varu_2}'.replace(/[\\r\\n]/g\,""))}
It gives me error "org.mozilla.javascript.EvaluatorException:
unterminated string literal (#1)".
Any help would be appreciated.

The inline evaluation (${varu_2}) of your variable containing multiple lines is broking the javascript evaluation.
For example the javascript would be interpreted as :
'line1
line2'.replace(/[\\r\\n]/g\,"")
The first line is an unterminated string like the error message tells us.
To avoid this behavior I would recommend using the JMeterVariables object, but since the javascript implementation (Rhino) does not seems to support well inline regexp, you should use 2 replace function instead of your regular expression:
${__javaScript(vars.get('varu_2').replace( "\r"\, "" ).replace("\n"\,""))}
Or if you prefer, with a beanshell function you can use any regular expression you :
${__BeanShell(vars.get("varu_2").replaceAll("[\r\n]"\,""))}

JsHint warning: A regular expression literal can be confused with '/='

I have this line in my Javascript code:
var regex = /===Hello===\n/;
JsHint gives me a warning in this line:
A regular expression literal can be confused with '/='`
...but I don't know what's wrong with this regular expression? How can I avoid this warning?

The problem is that /= could be interpreted as a division and assignment, rather than the start of a regular expression literal.
You can avoid the warning by using the RegExp constructor instead:
var regex = new RegExp("===Hello===\n");
There doesn't appear to be any option you can set to tell JSHint (or JSLint for that matter) to ignore /=, so your choice is either to work around it or ignore the warning.

javascript regex error

I have this string:
£1,134.00 (£1,360.80 inc VAT)
And I am trying to extract the numbers to get the following:
['1,134.00','1,360.80']
Using the following regex pattern in Javascript:
/\d*,?\d+\.\d{2}/g
It is working fine in Chrome, but I get this error in Opera:
Uncaught exception: Syntax error, unrecognized expression: (£1,360.80 inc VAT)
Error thrown at line 75, column 784 in <anonymous function: k.error>(g) in http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js:
throw"Syntax error, unrecognized expression: "+g;
Obviously I would like it to work in all modern browsers but I have no idea what is causing this. I have also tried several other regex patterns and have looked into escape characters as I thought it might be that.
Any ideas?!
Let me know if more info is needed. Thanks

unrecognized expression: (£1,360.80 inc VAT) <= that's not an error in your regex. Your string is not being a string. Somehow it's getting mixed and interpreted as part of your javascript.