正则表达式和多个字符串

Question

I'm trying to create a regular expression that matches EXACTLY the following set of strings, I'm super new to RegExp and don't know how to register line breaks:

fun  
ab  
acb         
accb  
acccb  
accccb  
....

Answer 1

If you are trying to include fun as one of the options:

 function check(string) { return /^(?:fun|ac*b)$/.test(string) } console.log([ 'fun', //=> true 'ab', //=> true 'acb', //=> true 'accb', //=> true 'acccb', //=> true 'accccb', //=> true 'abc', //=> false 'ccccb', //=> false 'acccb ' //=> false (note the extra space) ].map(check))