We are using below regular expression to validate email address in java ^[\\w!#\\$'\\*\\+=\\?\\^\\/_~-]+(\\.[\\w!#\\$'\\*\\+=\\?\\^\\/_~-]+)*@([a-zA-Z0-9\\-]+\\.)+[A-Z]{2,4}$ and it worked fine with invalid email address [email protected]&^(*&^(*^2 but when I use the same regular expression in javascript , it doesn't work and failes with even valid email addresses . Please suggest what could be root cause of this mismatch?
for e.g. in javascript , I'm getting false value with below test conditional -
/^[\w!#\$'\*\+=\?\^\/~-]+(\.[\w!#\$'\*\+=\?\^\/~-]+)*@([a-zA-Z0-9\-]+\.)+ [A-Z]{2,4}$/.test("[email protected]")
You need to convert \\ to \ in Javascript regex literal:
/^[\w!#$'*+=?^\/~-]+(\.[\w!#$'*+=?^\/~-]+)*@([a-zA-Z0-9-]+\.)+[A-Z]{2,4}$/i.test("[email protected]")
Also many special regex characters like $, +, * etc. don't need to be escaped inside character class hence I have removed unnecessary escaping from your character class.