Show/Hide last part of telephone number on site.

Hello

Im wonderin if it’s possible in any way to make something like you put your phone number on your site but you don’t want it to be whole visible all the time.

So basically when someone take a look on your site, he will see something like : “My mobile no.: 670 210 XXX” , and to encypt that XXX he has to click on a button “Show me whole number”.

Something like this :). I have just seen it in any jquery (or smth like this) “language”, but to be honest im not too familiar with all that programming stuff.

Is there any option to implement it in wordpress site ?