how do i get the value of the text box that is related to the specific option value when selected
Question
how do i get the value of the text box that is related to the specific option value when selected in servlet/jsp as i want to put it in the database.for eg, when i select the option red then it's related text box(which will have a default value) will be activated or appeared. I know to get the value of the selected option but i don't know to get the value of it's related option. Is there any other way to do it ..??Is there any one can help me please..!!! ??
<html>
<head>
<script type="text/javascript">
function CheckColors(val)
{
var element=document.getElementById('Color');
var element1=document.getElementById('Dolor');
var element2=document.getElementById('Polor');
element.style.display='none';
element1.style.display='none';
element2.style.display='none';
if(val=='others')
{
element.style.display='block';
}
else if(val=='red')
{
element1.style.display='block';
}
else if(val=='blue')
{
element2.style.display='block';
}
}
</script>
</head>
<body>
<select name="color" onchange='CheckColors(this.value);'>
<option>pick a color</option>
<option value="red">RED</option>
<option value="blue">BLUE</option>
<option value="others">others</option>
</select>
other:<input type="text" placeholder="other" name="Color" id="Color" style='display:none;'/>
red:<input type="text" placeholder="red" name="Dolor" id="Dolor" style='display:none;'/>
blue:<input type="text" placeholder="blue" name="Polor" id="Polor" style='display:none;'/>
</body>
</html>
1 answers
solution1
0 ACCPTED 2013-08-15 09:03:04
I would recommend you reading about Java JSP/Servlets. Follow a simple tutorial, google it!
To communicate with a web page and your code you will need to handle it with a submit form. There are different ways to achieve this, but simple is to use a form element, and an action and method. Either you add a submit call in your javascript CheckColors or apply a submit button when color has been chosen.
HTML request page --> Jsp or Servlet --> HTML response page
change:
<html>
<head>
...
<body>
<form name='theform' action='/javacode.jsp' method='post'>
<select name="color" onchange='CheckColors(this.value);'>
...
<input type="submit" value="submit" name="submit">
</form>
</body>
</html>
Now if you use a jsp or servlet, doesnt matter. This is simple demo.
In your javacode then, you do read the request with getParameter("color")
Read as I said a JSP / Servlet tutorial.
A tutorial with similar flow, using color as an example:
http://met.guc.edu.eg/OnlineTutorials/JSP%20-%20Servlets/A%20servlet%20example.aspx
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