checking user inputs

[raymond yadao]

how would i check the user's input in a servlets. for example, i have a five textbox, how would the program know if these textbox are all fill up before you hit the submit button. can i use javascript in servlets?

raymond

[Anil Vupputuri]

Originally posted by raymond yadao:
how would i check the user's input in a servlets. for example, i have a five textbox, how would the program know if these textbox are all fill up before you hit the submit button. can i use javascript in servlets?

Yeah obviously u need to validate the html form using javascript or using serverside validation.U can embed javascript in html which is being pumped out by servlet's PrintWriter or OutputStream.
Anil

[Marilyn de Queiroz]

Call the getParameter() method on req and check whether the input is null or has a length of zero on all of the text boxes.

[raymond yadao]

Originally posted by Marilyn deQueiroz:
Call the getParameter() method on req and check whether the input is null or has a length of zero on all of the text boxes.

but this can only be done as soon as u click the submit button. what i want is that, from the client browser it will check now if all the text boxes are fill up. so if it find that one has been leave blanks it will alert the user that some text boxes has not been leave blank.

[Frank Carver]

Anything that is done on the client really sneeds to be done in JavaScript. Try asking this in the "HTML and JavaScript forum".