explain what this means

[windandwaves]

Hi Folk

I found the following function somewhere on the web. I am not sure how it
works, but I am sure that it is very useful:

function getObj(name) {
if (document.getEl ementById){
if(document.get ElementById(nam e)) {
if(document.get ElementById(nam e).style) {
this.obj document.getEle mentById(name);
this.style document.getEle mentById(name);
}
}
}
else if (document.all){
this.obj = document.all[name];
this.style = document.all[name].style;
}
else if (document.layer s) {
this.obj = document.layers[name];
this.style = document.layers[name];
}
}

I guess that it finds out how the browser refers to elements with a specific
IDs and then returns them. However, I dont really understand "this." other
than that it refers to the function itself and how it or what it returns.
can someone explain it?

TIA

- Nicolaas

[RobertTG]

Code is not valid.
You didn't copy/paste right

Hi Folk

I found the following function somewhere on the web. I am not sure how it
works, but I am sure that it is very useful:

function getObj(name) {
if (document.getEl ementById){
if(document.get ElementById(nam e)) {
if(document.get ElementById(nam e).style) {
this.obj document.getEle mentById(name);
this.style document.getEle mentById(name);
}
}
}
else if (document.all){
this.obj = document.all[name];
this.style = document.all[name].style;
}
else if (document.layer s) {
this.obj = document.layers[name];
this.style = document.layers[name];
}
}

I guess that it finds out how the browser refers to elements with a specific IDs and then returns them. However, I dont really understand "this." other than that it refers to the function itself and how it or what it returns.
can someone explain it?

TIA

- Nicolaas

[Dr Clue]

It looks like it wants to be a javascript class
with a member obj set to the node named by name
and a member style pointing of course to the
style associate with obj

Problem is that this code will not work as is.
windandwaves wrote:

Hi Folk

I found the following function somewhere on the web. I am not sure how it
works, but I am sure that it is very useful:

function getObj(name) {
if (document.getEl ementById){
if(document.get ElementById(nam e)) {
if(document.get ElementById(nam e).style) {
this.obj document.getEle mentById(name);
this.style document.getEle mentById(name);
}
}
}
else if (document.all){
this.obj = document.all[name];
this.style = document.all[name].style;
}
else if (document.layer s) {
this.obj = document.layers[name];
this.style = document.layers[name];
}
}

I guess that it finds out how the browser refers to elements with a specific
IDs and then returns them. However, I dont really understand "this." other
than that it refers to the function itself and how it or what it returns.
can someone explain it?

TIA

- Nicolaas

--
--.
--=<> Dr. Clue (A.K.A. Ian A. Storms) <>=-- C++,HTML/CSS,Javascript, TCP ...
--`

[RobG]

windandwaves wrote:

Hi Folk

I found the following function somewhere on the web. I am not sure how it
works, but I am sure that it is very useful:
It may be useful for particular circumstances related to legacy code and
support for old browsers. It is likely that better methods exist for
new applications.

Read the FAQ and look for DynWrite.

function getObj(name) {
if (document.getEl ementById){
if(document.get ElementById(nam e)) {
if(document.get ElementById(nam e).style) {
this.obj document.getEle mentById(name);
this.style document.getEle mentById(name);
The last two lines should have an equals sign '=' and the last one
probably should be a reference to the element's style object:

this.obj = document.getEle mentById(name);
this.style = document.getEle mentById(name). style;
}
}
}
else if (document.all){
this.obj = document.all[name];
this.style = document.all[name].style;
}
else if (document.layer s) {
this.obj = document.layers[name];
this.style = document.layers[name];
}
}

I guess that it finds out how the browser refers to elements with a specific
IDs and then returns them.
The function doesn't return anything.
However, I dont really understand "this." other
than that it refers to the function itself and how it or what it returns.
can someone explain it?

Read this bit of quirksmode (and anything else that takes your fancy,
it's all good):

<URL:http://www.quirksmode. org/js/this.html>

--
Rob

[Dr John Stockton]

JRS: In article <0x************ *******@news.xt ra.co.nz>, dated Wed, 24
Aug 2005 17:25:01, seen in news:comp.lang. javascript, windandwaves
<wi*********@co ldmail.com> posted :

I found the following function somewhere on the web. I am not sure how it
works, but I am sure that it is very useful:

function getObj(name) {
if (document.getEl ementById){
if(document.get ElementById(nam e)) {
if(document.get ElementById(nam e).style) {
this.obj document.getEle mentById(name);
this.style document.getEle mentById(name);
}
}
}

It looks rather inefficient, as it does the search for name four
times. After removing the actual errors, consider something (untested)
along the lines of

function getObj(name) { var T
if (T = document.getEle mentById){
if (T = T(name)) {
if (T.style) {
this.obj T;
this.style T;
}
}
}
--
© John Stockton, Surrey, UK. ?@merlyn.demon. co.uk Turnpike v4.00 IE 4 ©
<URL:http://www.jibbering.c om/faq/> JL/RC: FAQ of news:comp.lang. javascript
<URL:http://www.merlyn.demo n.co.uk/js-index.htm> jscr maths, dates, sources.
<URL:http://www.merlyn.demo n.co.uk/> TP/BP/Delphi/jscr/&c, FAQ items, links.

[windandwaves]

windandwaves wrote:
Thank you all for your comments. Much appreciated. I wrote this function:

function getObj (name) {
var T;
if (document.getEl ementById){
T = document.getEle mentById(name);
if(T) {
if(T.style) {
return T;
}
}
}
}

Which seems to serve my needs: return something if the element can be found
and the style can be changed.

Thank you again.

- Nicolaas