I want to every word start with capital letter and rest of are should be in small letters while entering in text field.
I don't know how to give regular expression.
Asked
Active
Viewed 1,590 times
1
-
possible duplicate of [Javascript - How to capitalize first letter of each word, like a 2-word city?](http://stackoverflow.com/questions/4878756/javascript-how-to-capitalize-first-letter-of-each-word-like-a-2-word-city) – Rory McCrossan May 23 '12 at 13:03
-
Means I wan "Adfsd Dfad Cadsf" like that – mohana rao May 23 '12 at 13:04
-
If you will enter capital letter it should not display. – mohana rao May 23 '12 at 13:05
-
Wait, do you want to do a replace or validation? If you want to validate (i.e., check user input) you want my answer; if you want to do a replace, accept the answer from @MaxArt. – apsillers May 23 '12 at 13:15
-
while I entering it will be done – mohana rao May 23 '12 at 13:18
-
That doesn't clarify anything, unfortunately. Do you want to *change the input* to conform to your format once it is entered, or do you want a *function that returns true or false* that tells whether your input matches your format? – apsillers May 23 '12 at 13:22
-
Thank you for continuous effort "Apsillers". I got the output for my side. Please leave it. – mohana rao May 23 '12 at 13:34
3 Answers
2
Looks like a classic capitalization function.
input.value = input.value.replace(/\b[a-zA-Z]+/g,
function(m) {return m.charAt(0).toUpperCase()+m.substring(1).toLowerCase();})
MaxArt
- 22,200
- 10
- 82
- 81
0
Assuming you want to validate some input, you should write a match for what you don't want and then negate it:
!( /\b[a-z]|\w[A-Z]/.test(input_string) )
This regex matches for lowercase letters at the start of a word or uppercase letters immediately after another letter (i.e., in the middle of a word). If you negate this result, as I have done here, you'll get the validation you want.
MDN has a good intro to Regular Expressions and the JavaScript RegExp object
apsillers
- 112,806
- 17
- 235
- 239