how to allow the field should accept only numbers and another field should accept only alphabets? Please anyone can help? .test function does not work well.

primary choice is going to be regular expressions for this one

what does it mean regular expression?

i dont believe you gave test a real try if you dont know what a regular expression is

you mean this? var numbers = /^[0-9]/;

that is a regular expression, though thats not gonna give you only numeric characters

how to check all the characters?

start at Regular expressions

@vennila ramasamy I've never actually sat down and worked on regex, so I generally don't use it. Regex is an extremely technical thing that you're not going to figure out in a day. Consider iterating over the characters to inspect the string.

^ I agree with this. Regular Expressions are extremely valuable to add to your programming skills, but there is a steep learning curve. You can use the Number constructor to see if all the characters in a string are numeric. If all the characters are not numeric,

Number()

will return

NaN

, which you can check with

isNaN()

.

Number("12345") // => returns 12345 as a number
Number("ABCDEF") // => returns NaN
Number("123ABC") // => returns NaN

not really good enough for his task,

Number('12e3')

Oh good catch on exponential notation; too bad

parseInt()

does behaves differently