Last year a kind soul by the name of Lasse Reichstein Nielsen answered
a question for me on this newsgroup, including a script that solved my
problem. I now need to script to be slightly amended to take account
of something, and I am posting this message in the hope that Lasse, or
another equally talented reader, can help with this latest tweak to
the script.
On this newsgroup I asked for help with a questionnaire I was
doing in HTML & Javascript. I wanted a script that allowed me to use
the keys 1-9 to fill in the form rather than using the mouse (so where
there was a selection of radio controls, I would hit 1 to select the
first one, two for the second etc), and use Enter to move down the
form.
Lasse provided the script below, however sometimes there is a question
with an option "Other" which people can tick then write their "other"
response in the textarea below the question. Normally, the textarea is
disabled and greyed out (using box.disabled=true;
box.style.backgroundColor='#EEEEEE') until someone ticks the "Other"
box whereupon the box is enabled and they can type into it.
Lasse's script comes up with an error when it jumps to one of these
disabled boxes. Is there a way the script can be amended so that it
would skip past any disabled boxes, or at least not come up with an
error when it jumped to them?
Hope you can help.
Steve Wylie
Canterbury
United Kingdom
<script type="text/javascript">
var snapForm;
var currentControl;
var currentGroup;
var nextControl
function setTDBackground(elem,bg) {
// find surrounding td elements
var cnt;
var tds = [];
while(elem) {
if (elem.tagName == "TD") {
tds[tds.length] = elem;
}
elem = elem.parentNode;
}
// if successful, set the background color of the td around
// this answer.
if (tds && tds.length>=2) {
tds[tds.length-2].style.backgroundColor = bg;
}
}
function active(thisElem,nextElem) {
setTDBackground(currentControl,""); // clear previous highlight
currentControl = thisElem;
setTDBackground(currentControl,"yellow"); // set new highlight
nextControl = nextElem;
if (thisElem.name) {
currentGroup = thisElem.form.elements[thisElem.name];
if (! currentGroup.length) {
currentGroup = undefined;
}
}
}
function snapkey(event) {
event = event || window.event;
var key = event.keyCode || event.charCode || event.which;
if(key == 0x30 && currentGroup) { // 0
for (var i=0;i<currentGroup.length;i++) {
currentGroup[i].checked = false;
}
return false;
}
if (0x31 <= key && key <= 0x39 && currentGroup) { // 1-9
var idx = key - 0x31;
if (idx < currentGroup.length) {
currentGroup[idx].checked = true;
}
return false;
}
if (key == 13) {
if(nextControl){
var next = nextControl;
next.focus();
next.onfocus();
return false;
}
}
return true;
}
function init(formName) {
var makeActiveCall = function(next) {
return function(){active(this,next);};
};
var elems = document.forms[formName].elements;
var firstElem; // first named element. Is focused at start.
var currentName = "";
var currentIdx = 0;
for (var i=1;i<elems.length;i++) {
if (elems[i].type.toLowerCase() != "hidden" &&
elems[i].name && currentName != elems[i].name) {
if (!firstElem) {firstElem = elems[i];}
for (var j = currentIdx; j < i; j++) {
if (elems[j].name) {
elems[j].onfocus = makeActiveCall(elems[i]);
}
}
currentIdx = i;
currentName = elems[i].name;
}
}
for (j=currentIdx;j<elems.length;j++) {
elems[j].onfocus = makeActiveCall();
}
firstElem.focus();
firstElem.onfocus();
document.onkeypress = snapkey;
}
</script>
And at the top of the HTML, it needs:
<BODY onload="init('theForm')">
<FORM id="theForm" name="theForm">
7  2119 
On 3/9/04 10:28 am, Steve Wylie wrote: Last year a kind soul by the name of Lasse Reichstein Nielsen answered
a question for me on this newsgroup, including a script that solved my
problem. I now need to script to be slightly amended to take account
of something, and I am posting this message in the hope that Lasse, or
another equally talented reader, can help with this latest tweak to
the script.
On this newsgroup I asked for help with a questionnaire I was
doing in HTML & Javascript. I wanted a script that allowed me to use
the keys 1-9 to fill in the form rather than using the mouse (so where
there was a selection of radio controls, I would hit 1 to select the
first one, two for the second etc), and use Enter to move down the
form.
What is the point of all this? Why don't you use access keys instead?
Take a look here:
<http://www.w3.org/TR/html401/interact/forms.html#h-17.11.2>
--
Philip Ronan ph***********@virgin.net
(Please remove the "z"s if replying by email)
> What is the point of all this? Why don't you use access keys instead?
Take a look here:
<http://www.w3.org/TR/html401/interact/forms.html#h-17.11.2>
Well, the point behind it is revealed from the paragraph in your
article that says: "The invocation of access keys depends on the
underlying system. For instance, on machines running Windows, one
generally has to press the 'alt' key in addition to the access key."
With Lasse's method, you don't.
Steve
Steve Wylie wrote:
Who wrote this? Have you nothing learned during this year?
vvvvvvvvvvvvvvv What is the point of all this? Why don't you use access keys instead?
Take a look here:
<http://www.w3.org/TR/html401/interact/forms.html#h-17.11.2>
Well, the point behind it is revealed from the paragraph in your
article that says: "The invocation of access keys depends on the
underlying system. For instance, on machines running Windows, one
generally has to press the 'alt' key in addition to the access key."
With Lasse's method, you don't.
With Lasse's method, you rely on the support of another technology,
client-side scripting, which often is absent. How is this any better
than using built-ins?
PointedEars
--
Whoa There CowBoy! I Think We Got Us A Situation Here!
Steve Wylie wrote:
Who wrote this? Have you nothing learned during this year?
vvvvvvvvvvvvvvv What is the point of all this? Why don't you use access keys instead?
Take a look here:
<http://www.w3.org/TR/html401/interact/forms.html#h-17.11.2>
Well, the point behind it is revealed from the paragraph in your
article that says: "The invocation of access keys depends on the
underlying system. For instance, on machines running Windows, one
generally has to press the 'alt' key in addition to the access key."
With Lasse's method, you don't.
With Lasse's method, you not only rely on the support of another technology,
client-side scripting, which often is absent, but also take the risk of
disabling common keyboard shortcuts. How is this any better than using
the built-ins?
PointedEars
--
Whoa There CowBoy! I Think We Got Us A Situation Here!
Because I don't want to have to (a) hold down the ALT key when
inputting at speed, and (b) reformat by entire HTML form to
accommodate the access keys method. Lasse's Javascript is
self-contained and will just work with the form as it exists now.
I'm just looking for a tweak to the existing script, not a full blown
argument over the method!
Lasse - are you out there mate?! PLEASE respond if you read this!
Steve Wylie
Thomas 'PointedEars' Lahn wrote: Steve Wylie wrote:
Who wrote this? Have you nothing learned during this year?
vvvvvvvvvvvvvvv
It appears to have been quoted and posted by Steve Wylie. Get some
common sense and that becomes obvious. What is the point of all this? Why don't you use access keys instead?
Take a look here:
<http://www.w3.org/TR/html401/interact/forms.html#h-17.11.2>
Well, the point behind it is revealed from the paragraph in your
article that says: "The invocation of access keys depends on the
underlying system. For instance, on machines running Windows, one
generally has to press the 'alt' key in addition to the access key."
With Lasse's method, you don't.
With Lasse's method, you rely on the support of another technology,
client-side scripting, which often is absent. How is this any better
than using built-ins?
"often is absent"? I find that a dubious claim.
--
Randy
comp.lang.javascript FAQ - http://jibbering.com/faq
Steve Wylie wrote: Because I don't want to have to (a) hold down the ALT key when
inputting at speed, and (b) reformat by entire HTML form to
accommodate the access keys method. Lasse's Javascript is
self-contained and will just work with the form as it exists now.
I'm just looking for a tweak to the existing script, not a full blown
argument over the method!
Lasse - are you out there mate?! PLEASE respond if you read this!
I am not Lasse, but ignore the PointedEars person, we are still
anticipating his exit from puberty.
--
Randy
comp.lang.javascript FAQ - http://jibbering.com/faq This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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