Regular expression problem

hi,
i am struggling to do basic regular expression that matches
"A1234567", must starts with A and is 8 characters long,
this is what i have so far:




can some one please help

Hi,

I think there's a general misunderstanding regarding the regex syntax. What you've wrote down means:

a string starting with at least one A (can be more) followed by 8 digits and after that an abritrary number of characters

If you want a string starting with a single A followed by exactly 7 digits and nothing else, that would be

/^A\d{7}$/

You cannot set the string length with regexes, only the count of a specific expression.

thank you so much.

is there another way/s of writting that expression?

What do you mean? Of course you can make it longer, for example by replacing the \d with [0-9] or by actually writing down all 7 digits. But this is the shortest and most clean way.