Subject: Re: Passing JavaScript variable to a Java Scriptlet on a JSP page From: Matt Raible <[EMAIL PROTECTED]> === #2 can be done much easier using one of the Javascript Remote Scripting libraries out there.
www.ashleyit.com has a good one. On 4/17/02 8:36 PM, in article [EMAIL PROTECTED], "John Jones" <[EMAIL PROTECTED]> wrote: > You're trying to merge client side code and server side code. Your server > side code has no idea what the country variable is. Here are only two ways > to do this: > > 1. Build javascript arrays of the information dynamically on the server side > and build the proper associations between the data using javascript. Then > build the function to act on that data on the onChange events on the select > boxes. > > or > > 2. Create 1 pixel frame on right side of screen and when you select an > option in your select box, have a javascript function refresh that frame and > have some JavaScript arrays print out over there and using the onLoad > command for that frame, populate the select box on your main page based on > the value selected. This option is kind of klugy, but could be fun. :-) This > is really probably only good for intranet type application where everyone > has guaranteed fast connection over a LAN. > > ----- Original Message ----- > From: "sanjeev_dutt" <[EMAIL PROTECTED]> > To: "Struts Users Mailing List" <[EMAIL PROTECTED]> > Sent: Monday, April 15, 2002 9:04 AM > Subject: RE: Passing JavaScript variable to a Java Scriptlet on a JSP page > > > Hi Oliver, > > The main issue here is that I don't want to reload the page. > Is there some way this could be done without reloading the page ? > > Thanks > Sanjeev > > -----Original Message----- > From: Oliver Reflé [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 15, 2002 6:26 PM > To: Struts Users Mailing List > Subject: RE: Passing JavaScript variable to a Java Scriptlet on a JSP > page > > > Why don't you try it like this, > your Option list could be derived from a collection which is stored as an > attribute of the page. > Each time you select a value you can call a javascript funtion which filters > this collection. > > Maybe your data is stored like that > germany.bavaria.nuremberg > englang.blabla.london > > so you can filter the data, then reload the the page(don't forget to > set again your collection as attribute) > > -----Original Message----- > From: sanjeev_dutt [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 15, 2002 2:49 PM > To: Struts Users Mailing List > Subject: RE: Passing JavaScript variable to a Java Scriptlet on a JSP > page > > > Hi Oliver, > > I am forced to do that. Actually on my JSP I have three lookups: Country, > State and City. > If the user choses a particular country, then he should be able to see only > the corresponding states in the states lookup. > This is where the JavaScript comes in. > > Any other suggestions to implement this ? > > Thanks > Sanjeev > > > > -----Original Message----- > From: Oliver Reflé [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 15, 2002 6:10 PM > To: Struts Users Mailing List > Subject: RE: Passing JavaScript variable to a Java Scriptlet on a JSP > page > > > I don't know exactly why you want to do that ? > Why don't you use > <% Hashtable states = new Hashtable(); > states = Combo.getStates(country); > .... > %> > and then you use > Country: <%=country.toString()%> > > You don't need to use this javascript stuff, cause the disadvantage > is that you execute this document.write stuff on the client side. > You first execute you java scriptlet, the transfer the date to the > client and there the javascript code is executed. > > So it would be easier if you would only work with Java scriptlets or Tags > here > > Oliver > > -----Original Message----- > From: sanjeev_dutt [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 15, 2002 2:32 PM > To: Struts Users Mailing List > Subject: Passing JavaScript variable to a Java Scriptlet on a JSP page > > > Hi, > > I have this piece of code on my JSP: > > <Script language = "javascript"> > function fnGetStates() > { > country = document.searchAcctForm.cboAcctAddrCountry.value; > alert(country); > document.write('<% Hashtable states = new Hashtable(); %>'); > document.write('<% states = Combo.getStates(country);%>'); > document.write('<% Enumeration state = states.keys(); %>'); > document.write('<% while (state.hasMoreElements()) { %>'); > document.write('<% String statecode = (String)state.nextElement(); %>'); > document.write('<% String sts = (String)states.get(statecode); %>'); > document.write('<html:option value="<%= statecode %>"><%= sts > %></html:option>'); > document.write('<% } %>'); > } > </Script> > > > The problem is that "alert" is able to show the value of country. But within > the document.write, It is not able to get the value of "country". It throws > the following error : > > ~:\citione\web\WEB-INF\_tmp_war_myserver_myserver_web\jsp_servlet\_jsp\_sear > ch\__searchacct.java:801: cannot resolve symbol > probably occurred due to an error in /jsp/search/searchacct.jsp line 197: > document.write('<% states = Combo.getStates(country);%>'); > Could some one help ? > Thanks > Sanjeev > > > -- > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > > > -- > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > > > -- > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > > > -- > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > > > -- > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > > > > -- > To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
