Regular Expression String followed by digits in Javascript

Question

I am getting myArray as null. Can anyone help me?

myRe = new RegExp ("[A-Z]+(\\d+)");
myArray = myRe.exec("book1");
alert(myArray.length);

Answer 1

Your regular expression is case sensitive; try:

myRe = new RegExp ("[A-Za-z]+(\\d+)");

or:

myRe = new RegExp ("[A-Z]+(\\d+)", "i");

Answer 2

It's because you use [A-Z] which is for uppercase.

Use this instead:

pattern = /[a-z](\d+)/i;
myArray = pattern.exec("BOOK1");
alert(myArray.length);