Checkbox problem

[Vile Demonic]

im new to this whole javascript thing.


can anyone tell me how to to do this.

im wanting to set up a checkbox so that when its selected it displays 400 in a seperate text box if its not selected it stays empty. Also additional to that i need a secondary checkbox that can be selected and display 600 in the before mentioned text box. i need it set up so that only one of these can be selected and displayed at a time.

its for a booking fomr i need to do. cant suss out how to do this

[rangana]

Could you rephrase it?..The question has two meaning:

1.) When the checkboxes are clicked a "400" or "600" is displayed on a text box.

2.) When the checkboxes are clicked a 400 or 600 textbox appears.

I suppose it's no.1, See if this help:

<script type="text/javascript"> 
window.onload=function()
{
var check400=document.getElementById('check400'),
check600=document.getElementById('check600'),
output=document.getElementById('output');
output.disabled='disabled';
check400.onclick=function()
	{
	if(this.checked){
	check600.checked=false;
	output.value='400';
	}else output.value='';
	}
check600.onclick=function()
	{
	if(this.checked){
	check400.checked=false;
	output.value='600';
	}
	else output.value='';
	}
}
</script> 
<input type="checkbox" name="mycheck" id="check400"><label>400</label>
<input type="checkbox" name="mycheck" id="check600"><label>600</label>
<br>
<label>Shows Here: </label><input type="text" id="output">

[Vile Demonic]

Yeah thats about right

although i still cant get the 400 or 600 to appear in the box. I may be going about this a very difficult way.


This is part of an open book assessment im doing and i cant figure out the simplest solution.

[rangana]

Which is not working?..Could you show us your codes

[Vile Demonic]

ach i just deleted all the codes. think im going to start it all try find a more simple way.

all i need is a way to display 400 or 600 either by using a check box or drop down menu in a seperate text box (like a total would) so it can be added onto another number (not always used) then display the total of those 2

[rangana]

Whatever you decision is, just get back if you're still stumped