regex validate password length, special char,number and length javascript code example

Example 1: regex password

^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#\$%\^&\*])(?=.{8,})

Example 2: javascript password validation special character

function CheckPassword(inputtxt) 
{ 
var paswd=  /^(?=.*[0-9])(?=.*[!@#$%^&*])[a-zA-Z0-9!@#$%^&*]{7,15}$/;
if(inputtxt.value.match(paswd)) 
{ 
alert('Correct, try another...')
return true;
}
else
{ 
alert('Wrong...!')
return false;
}
}