Validate the String

[jeeva]

hi frnds,

 

i want validate a field should be in string using javascript

i have used isNaN function.but its allow the character also...

for example if i enter the value as 'kkk12234'. its not validating the numbers

 

any one can help me?

 

[ozfred]

i want validate a field should be in string using javascript

 

The content of a form control or similar HTML element is always returned as a string.

 

i have used isNaN function.but its allow the character also...

for example if i enter the value as 'kkk12234'. its not validating the numbers

 

That depends on what you mean by "validating the numbers".  isNaN works exactly as described in the ECMAScript Language Specifiction.  If you want to check that a string consists of only digits, use a regular expression:

 

  if ( /\D/.test(someField.value) {

    /* value contains non-digit characters */

  }

 

You will get better help in regard to javascript in a real javascript forum:

 

news: comp.lang.javascript

<URL: http://groups.google.com.au/group/comp.lang.javascript/topics?lnk=gschg&hl=en >

 

--

Fred

Javascript FAQ: <URL: http://www.jibbering.com/faq/ >