The "." matches any single character but does not limit the string length so you would also want to check the length of the string as well.
if(currentID.length == testID.length + 1 && pattern.exec(currentID)) --- In [email protected], "fumeng5" <fume...@...> wrote: > > Hi, > > I have a filter function for an array collection that I'm working with. In > this scenario, I start with an ID such as '1'. Based on that, I want to > return '1_1', '1_2', etc... Basically, an underscore followed by 1 digit. > > Here's the code: > > var currentID:String = item.id.toString(); // i.e. 1_1, 1_2, etc.. > var testID:String = buttonID + '_'; // buttonID would equal 1 > var pattern:RegExp = new RegExp('^' + testID + "."); > > if( pattern.exec( currentID )) > return true; > else > return false; > > The problem is that this filter is also returning other IDs such as '1_1_2', > '1_1_3'. I thought the '.' would limit it 1 character only after the > underscore. > > Can anyone see where I may be going wrong? > > Thank you! >
