how to check for null and non-number data enterd(like characters or special char)in to text box by using java script?

Question

hi i have a page having text box. in that i should not allow user to go to next page unless he enters some NUMBER. it should number but not text and should not be empty , any help pls?

score 4 · Accepted Answer · answered Oct 14 '09 at 14:33

4

Try this:

isNaN(yourText.value)

return true if its Not a Number

answered Oct 14 '09 at 14:33

Rubens Farias

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score 0 · Answer 2 · edited May 23 '17 at 12:11

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The title references checking for null, so you might also want to look at the null object in javascript.

edited May 23 '17 at 12:11

Community

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answered Oct 14 '09 at 16:51

Michael Paulukonis

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how to check for null and non-number data enterd(like characters or special char)in to text box by using java script?

2 Answers2