Question

I want to do a regex pattren in JavaScript that will allow a string only with numbers and this signs: ()+ and a space. In a length of 5-16 chars.

Please Note: the order of the chars in the string is not important.

What is the right pattren for this?

Thanks

Answer 1

How about this:

/^[0-9 ()+]{5,16}$/

It’s quite easy to construct it by yourself. )
First, as you impose strict limits, you should check the whole string, so regex should be wrapped into /^...$/.

Second, if you only need some specific characters, you should use character class: write all them down into […] form. In your case you can shortcut: replace /^[0123456789 ()+]$/ with just /^[0-9 ()+]$/.

Finally, state some quantitative limits with {$min, $max} form: in your case that would be {5,16}. Mix this into what you got so far – and voila! You solved the task. )