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05.16.2008 at 08:34AM PDT, ID: 23408654

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8.4

Javascript Help : Confirm and Alert box for the same button

Zones: JavaScript, Programming, Asynchronous Javascript and XML (AJAX)

Tags: Javascript

Hello ,

I am trying to get the following process working through Javascript

I have a button(type= image)and when I click this it adds an item(using addItem function) to the list which is on the page..I am trying to show a confirmation box to ask the user "want to add" yes/no...and if YES then add it using the existing addItem funciton otherwise dont do anything.

Also if once the item is added and if they click the button(same) again then it should alert them saying "Already added" if its added or do the first step(Ask them if they "want to add" YES/NO).

Please let me know how to achieve this functionality in javascript.Also I wanted to have a customized confirm box/alert box or suggest if there is any other way to achieve this and I shall try it out.

Existing addItem function is
<Check code snippet>

HTML Button
<a href="javascript: addItem('$prod');">
<img src='/additem.png' border='0'></a>

Waiting for the ideas and let me know if I need to provide more info...Thanks.

         
           
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             function addItem(item) {
function getArgs() {
var args = new Object();
var query = location.search.substring(1);
var pairs = query.split("&");
var newstring = "";
for(var i = 0; i < pairs.length; i++){
var pos = pairs[i].indexOf('=');
if (pos == -1) continue;
var argname = pairs[i].substring(0,pos);
if(argname.toLowerCase() != "siteid" && argname.toLowerCase() != "urlpull" && argname.toLowerCase() != "exstyle" && argname.toLowerCase() != "aitems" && argname.toLowerCase() != "mitem" && argname.toLowerCase() != "ditems"){
newstring += pairs[i] + "&";
}
}
return newstring;
}
 
if (getArgs()) { urlString = getArgs(); }
else { urlString = ''; }
 
window.location = location.pathname + '?' + urlString + 'aitems=' + item + '#itemList';
}
           
         

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Question Stats

Zone: Programming

Question Asked By: Igiwwa

Solution Provided By: Zvonko

Participating Experts: 1

Solution Grade: B

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05.16.2008 at 11:37AM PDT, ID: 21585294

Igiwwa:

Let me know if the question is not clear.

05.17.2008 at 12:36AM PDT, ID: 21588292

Rank: Genius

Zvonko:

The question is three questions: How to change the confirm() dialog? How to call the confirm() method? How to store the added items?
And if you look closer then it is not a question at all but a solution development.
For example, how would you know from JavaScript side that an item is added after the window is loaded with new location? Storing the added item name in an Array or Object is not a problem at all, but that var is gone after window reload.

05.19.2008 at 08:39AM PDT, ID: 21598739

Igiwwa:

Thanks for the reply. I understand what you are saying but can you suggest / guide me if there is any alternative solution to achieve this or closer to this.

Thanks.

05.19.2008 at 08:46AM PDT, ID: 21598788

Rank: Genius

Zvonko:

Starting point is to change the <a> tag to this:
<a href="#" onClick=addItem('$prod');return false">
<img src='/additem.png' border='0'></a>

And add the confirm() call like this:
function addItem(item) {
if(!confirm("want to add")){
return false;
}
function getArgs() {

05.19.2008 at 09:07AM PDT, ID: 21598989

Igiwwa:

Thanks a lot again.This works if they want to add/cancel the choice..just wondering if there is any other way to give some message when they click it second time(I understood what you had mentioned earlier that we cannot store it anyways.)but just wanted to know if someway we can mention/alert/display that or avoid the confirm box for the second time when they click after adding it? and I shall take them to the list so that they can see it there.. Also is customizing a confirm box possible??Advise me.

if nothing is possble or if there is no alternative for what I need then I shall accept this as solution.

05.19.2008 at 02:18PM PDT, ID: 21601703

Rank: Genius

Zvonko:

Like this:

var arrProd = {};
function addItem(item) {
if(arrProd[item]){
alert("Already added");
return false;
}
if(!confirm("want to add")){
return false;
}
arrProd[item] = true;
function getArgs() {

Accepted Solution

05.19.2008 at 02:21PM PDT, ID: 21601731

Rank: Genius

Zvonko:

And if your items are numeric then you need a prefix.
Like this:

var arrProd = {};
function addItem(item) {
if(arrProd['_'+item]){
alert("Already added");
return false;
}
if(!confirm("want to add")){
return false;
}
arrProd['_'+item] = true;
function getArgs() {

05.19.2008 at 04:20PM PDT, ID: 21602391

Igiwwa:

Hi,

Thanks this idea works better but there is small problem as below
It confirms one more time after adding it and then shows the alert message..
Its as below
Want to add - Ok
it adds it
If you click again it again asks "Want to add" but it doesnt to anything even if you say OK.
If you click it for third time ..it shows the Alert message...and its fine for further clicks.
I tried by checking the condition if its true but stil it dint solve the problem?Any idea..
thanks a lot for the help provided.

05.19.2008 at 10:28PM PDT, ID: 21603671

Rank: Genius

Zvonko:

After you click add - OK does this statement execute:
window.location = location.pathname + '?' + urlString + 'aitems=' + item + '#itemList';

After that statement is no script execution predictable.
Especialy when it realy added the item the for sure is the arrProd var not more available as before. The scripts and vars live ONLY for duration of one page load. After reload by window.location change as above are the new page script and their vars valid.

05.20.2008 at 06:09AM PDT, ID: 21605733

Igiwwa:

Yeah window.location happens and item is added when I click OK in the confirm box for the first time..then after page load if you click the button it asks the question "want to add" but if you click OK it doesnt do anything it just stays in the same page and from there on if you click the button it says "Already Added" which is fine...so only thing is to avoid the confirm box again after window.location..any suggestions?
Please let me know if I need to be more clear.

05.20.2008 at 06:20AM PDT, ID: 21605837

Rank: Genius

Zvonko:

Please understand: that CANNOT work.
So you need not to explain me what happens because that scenario will never go to work korrect. So it it is independant how it now behaviors.

05.20.2008 at 06:27AM PDT, ID: 21605894

Igiwwa:

Thanks..I understood that..I thought you asked me to explain it again..
Thanks for all the help.Really useful tips.I shall accept this solution.

05.20.2008 at 06:59AM PDT, ID: 21606181

Rank: Genius

Zvonko:

OK. So for handling added items you need some sort of web server side scripting processing.

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