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Code runnig in wrong order!?
[8Replies]
- 14-Jun-2012 05:29 AM
- Forum: Using jQuery
Hey guys!

Another day, another Problem.

While programming my gallery I've stumbled opon some very strange problems.

To get a better view into the execution of my code I've "written" (copy and paste) a pause function.
Now I think I might have found my troublemaker: my sourcecode seems to run backwards!

With "pause" I've found these problems / this problem:

Here is a short part of my code that troubles me:
1. function pause(milliseconds)
      {
          var dt = new Date();
          while ((new Date()) - dt <= milliseconds)
              {
                  /* do nothing */
              }
      }
  
  $(document).ready(function()
      {
          $("#thumbs img").click(function()
              {
                  $(".vor").text("Test");
  
                  pause (3000);
              });
      });
What my code should do:
1. Overwirte the text in $(".vor")
2. Wait for 3 seconds
what my code does:
1. Wait for 3 seconds
2. Overwirte the text in $(".vor")
The lines get executed in the wrong order, but thats not all:

I get realy weird results when using alerts:
1. $(document).ready(function()
      {
          $("#thumbs img").click(function()
              {
                  $(".vor").text("Test");
  
                  alert ("hi there!");
  
                  pause (3000);
              });
      });
Now my code does what it is supposed to do:
1. Overwirte the text in $(".vor")
2. Greet the user with a friendly "hi there"
3. Wait for 3 seconds
BUT:

If I chance the order of my code to:

$(document).ready(function()
    {
        $("#thumbs img").click(function()
            {
                alert ("hi there!");

                $(".vor").text("Test");

                pause (3000);
            });
    });

It does:
1. Greet the User
2. Wait for 3 Seconds
3. Change the text
so the order in wich $(".vor").text("Test"); and pause (3000); are executed are swapped again.

I am totally confused why that is...

Can someone please help me to understand this behaviour, thank you very much!

imagePath = $("#content img").attr("src"); -> works // $("#content img").attr("src") = imagePath; -> does not - why?
[3Replies]
- 03-May-2012 10:15 AM
- Forum: Getting Started
Hey you guys!

I am just getting startet with jQuery and OOP so please excuse me if I am asking the obvious.

Here is my problem:
While I am trying to programm my own gallery, I got stuck at one part, here is what my code looks right now:
1. <html>
2. ...
3. <div id="content">
5. <img src="pictures/namibia/01.jpg">
7. </div>
8. ...
9. </html>
----------------

In jQuery:
1. ...
2. imagePath = $("#content img").attr("src"); --> works like a charm!
3. ...
1. ...
2. $("#content img").attr("src") = imagePath; --> doesn't work at all.
3. ...
All I get is an error message from my Visual Studio:
Runtime error in Microsoft JScript: Can't be assinged to a result of a function.
(Not sure if this is the exact translation, here is the original message: "Kann dem Ergebnis einer Funktion nicht zugewiesen werden")

I am quite puzzled why that is.

I already dubblechecked my "imagePath" variable, its content is OK, as it holds my desired "pictures/namibia/02.jpg"

By the way: these lines of code work great - if clicking the image that is, what is not what I am looking for ...
1. $(document).ready(function()
2. {
3. $("#content img").click(function()
4. {
5. this.src = imagePath;
6. });
8. });
So here I am, hoping for your help.

Thank you very much in advance, have a nice day all!

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