javascript|js| Dynamic General, we use
Request.getparameter ("value");
To get the value of the static HTML input. Then don't forget to judge whether it is empty, whether it contains special characters, etc.
can also use
Enumeration Paramnames=request.getparameternames ();
while (Paramnames.hasmoreelements ()) {string paramname= (String) paramnames.nextelement ();}
To collect name from the <input type= "text" name= "name"/>
But each new line we add, the parameter name is the same as the previous line, so how do we get the value?
Here I went to read (Servlet and JSP core programming, a very good book, it is said, read and understand it servlet/jsp can also say proficient) p70 page: Getparametervalues () returns an array of strings, Then we use the loop to determine the length of the string array, and then we get the value:
Request.getparameter ("value");//This is the most familiar, get the value of the text box
(enumeration) request.getparameternames ();//Get the name of the text box
(string[]) request.getparametervalues (paramname);//Get the value of the same argument (multiple occurrences) of the static HTML page
HTML page JavaScript code:
<script language= "JavaScript" >
function Tbladdrow ()
{
var i=lines.rows.length;
var row = Table1.insertrow (Table1.rows.length);
var col = Row.insertcell (0);
col.innerhtml = "<input id=line[" +i+ "][name1" Name=line "+i+ name1";
Col = Row.insertcell (1);
col.innerhtml = "<input id=line[" +i+ "][name2" Name=line "+i+ name2";
Col = Row.insertcell (2);
col.innerhtml = "<input id=line[" +i+ "][name3" Name=line "+i+ name3";
Col = Row.insertcell (3);
col.innerhtml = "<input id=line[" +i+ "][name4" Name=line "+i+ name4";
}
function Tbladdrows (items)
{
for (i = 1; I <= items; i++)
{
Tbladdrow ();
}
}
function Delrow ()
{
if (lines.rows.length==0)
{
return false;
}
Lines.deleterow ();
}
</script>
HTML page other code:
<meta http-equiv= "Content-type" content= "text/html; Charset=big5 ">
<title> input </title>
<body>
<form action= "getinput.jsp" >
<div align=center><font size=2> Input tests </FONT></DIV></TD>
<TD width=412 bgcolor= #e4e4e4 >
<table id=table1 cellspacing=0 bordercolordark= #ffffff cellpadding=0
width=350 align=center bordercolorlight= #000000 border=1>
<TBODY>
<tr bgcolor= #999999 >
<th Width=94><font size=2> a </FONT></TH>
<th width=84><font size=2> Parameters two </FONT></TH>
<th Width=85><font size=2> Reference three </FONT></TH>
<th width=77><font size=2> Parameters four </FONT></TH></TR>
<tbody id=lines name= "lines" ><!--
<TR>
<td><input id= "Things_name" type= "text" name= "Things_name" size= "></TD>"
<td><input id= "Things_model" type= "text" name= "Things_model" size= "ten" ></TD>
<td><input id= "Things_number" type= "text" name= "Things_number" size= "5" ></TD>
<td><input id= "Things_unit" type= "text" name= "Things_unit" size= "5" ></TD>
</TR>
--></tbody></table>
<div align=center><br></div>
<div align=center>
<input id=items Type=hidden value=1 name=items> <input (Onclick=tbladdrow);
Type=button value= New Line name=insert/>
<font color= "#e4e4e4" > </font>
<input language=javascript Type=button value= Delete Row name=del/>
</DIV></TD></TR></TBODY></TABLE>
<input type= "Submit" value= "Commit"/>
</form>
</body>
JSP Page Collection input
<%@ page contenttype= "Text/html;charset=big5"%>
<%@ page import= "java.util.*"%>
<%
Request.setcharacterencoding ("Big5");
Enumeration Paramnames=request.getparameternames ();
String Paramname=null;
while (Paramnames.hasmoreelements ()) {
Paramname= (String) paramnames.nextelement ();
String Param=request.getparameter (paramname);
Out.println (paramname+ "" +param+ "<br>");
String paramvalues[]=request.getparametervalues (paramname);
for (int i=0; i<=paramvalues.length-1; i++)
{
Out.println (paramname+ "");
Out.println (paramvalues[i]+ "<br>");}
}
Out.println ("<br>" +name);
%>
<meta http-equiv= "Content-type" content= "text/html; Charset=big5 ">
<title> Accept Input </title>
<body>
</body>
