how do i say

that if a checkbox is checked do this,

else do this

basically what i want is i have a checkbox, which if it is checked will display a text

if it is not cheked will display another message.


i tried but it is giving me errors


thanks

Hi praveen,

I am not very familiar with JavaScript, but this is how it is done in VBScript.

PHP Code:

<form name=checkbox>
<input type="check">
</form>
<script language="VBScript">
if document.checkbox.elements(0).Checked Then
   alert "Message 1"
else
   alert "Message 2"
</script> 


It might be something similar in JavaScript. Do remember that when verifying whether a checkbox/radio button is checked, you MUST refer to the element number. You cannot refer to it using the assigned "value".

In js:

PHP Code:

if(document.myform.mycheckbox.checked) {
   alert("The element is checked.");
} else {
      alert("The element is not checked");
} 


Just replace myform with the name of your form and mycheckbox with the name of your text box.
-dk

hey,

visit http://javascript.internet.com/ this place have a lot of useful free javascripts.

chao, xtravel

Yes but it is better to write your own javascript! Its fun and a good way to learn some programming basics before moving on to a major langauge.
-dk

firstly,
thanks ppl.

what i am looking for and want is.

i have a checkbox and a "hidden layer" beneath it.

so whenever someone checks the box, it should be visible.
this part is fine and works.

but when someone unchecks it, the layer should disappear.

how do you do this..




here is the code.

this is the style denition

.message {visibility: hidden;}

here is the script..

function toggle(e) {
if (e.style.display == "none") {
e.style.display = "";
} else {
e.style.display = "none";
}
}


and here is the checkbox
<form>
<input type="checkbox" id="checkbox" onclick=toggle(message)" ></form>

here is the div..

<div id="message"> test the message script.</div>

what is happening is, this script overrides the style settings for the message div and displayes it.. when the checkbox is checked it disappears..

but what i want is the other way round.

when the checkbox is checked, it should appear..

how do i do it..???

Originally posted by dk01
Yes but it is better to write your own javascript! Its fun and a good way to learn some programming basics before moving on to a major langauge.
-dk

I find it especially enjoyable to program, except I personally find VBScript easier than JavaScript.

conkermaniac:
Yeah vbscript is nice if it was supported by more browsers than just ie. I am assuming you do vb normally? I love vb but have recently gotten into c++'s object oriented progamming stuff and it quite useful.

praveen:
Check out this tutorial I wrote about the subject of hiding and showing layers (<div> or <span>):
http://www.conxiondesigns.com/tutorials/hideshow/
If you have any problems with it just let me know.
-dk

Thank You DK


i was looking for asomething like this only. thanks a lot.

and merry christmas to all.. and a happy new year

No probs. Same to you. Merry xmas.
-dk