Php and anchor problem

[pastoren]

My problem is i have a anchor autogenerated from tables in my database
in pho it takes some time to generate,
with use of anchors

<script language="javascript">
function gotoanchor() {
   var buy_now = "',$buy_now,'"
   if(buy_now) {
       var flex = "',$flex,'";
       var anchorname = "#" + flex;
       location.replace(location.href+anchorname);
    }
}
// in body 
onload = gotoanchor();
</script>';

every things works! exept the function seems to work faster than
the php script generating the ancor tags........
any idease how to solve this
the function "jumps" to the first table of some reason
I have tested that all my variables is there width:

alert("");

they works
The ancorname is generated correct.

so what can i do😃

[toxic_brain]

every things works! exept the function seems to work faster than
the php script generating the ancor tags........

I hardly agree to this because in normal case, PHP code executes in the server and start to send output to browser after the completion of the script.(exception here is forceful flush)

"The difference between location.href and location.replace is that the former creates a new history entry on the visitor's browser meaning that if they hit the back button, they can get in a 'redirection loop' which is usually undesirable and may have unwanted side effects."

do u have a specific reason to use location.replace rather than location.href ? does that resolve the issue?

[johanafm]

pastoren;10939678 wrote:

exept the function seems to work faster than
the php script generating the ancor tags........
any idease how to solve this
the function "jumps" to the first table of some reason

I have problems interpreting what this means, but if I got it right, what you mean is that you do NOT want to automatically jump anywhere, but rather just create an anchor for the user to click?
PHP would be far better suited to create the anchor in the first place. But sticking with javascript, change location.replace to something like this

var a = document.createElement('a');
a.href = location.href + '#' + flex;
a.appendChild(document.createTextNode('Buy now');
document,insertBefore(a, document.firstChild);

[pastoren]

explanation:
You are comming from my buy_now button from a specific table eks. #21 anchornode
this comes from the php form, then when it have done what the script should do
the

function gotoanchor() 

is passed and then the

// in body 
onload = gotoanchor();

is pased.

Then it generates the page with the tables(each sale items, there are generated from the database). This part is done in PHP as a while loop

Problem:
The body on load is passed BEFORE the php has generated the and uopdated the tables so it can not find the right anchor it just jums to the first ancor.

Problem solving (maby😕):

window.setTimeout(referenceToFunction,timeInMilliseconds); 

so the function waits maby 5 miliseconds before executing......
or in php generates all the codes for the table as a variable "before" the

function gotoanchor() 

then echo the tables out as finihed code in a varable instead!
thanks
flemming 😃

[johanafm]

The onload event fires when the body has loaded, not when it loads, so this is not the issue. Look at the finished js source to see what may be wrong. Or better yet, use a browser with helpful and accurate information about javascript errors.

But I believe you should drop this approach and rather make the URI for the post request contain the hash (#21).
And if you don't, you should proably build the URI from

protocol
host
port
pathname
search
hash

Otherwise, subsequent page reloads will keep adding the hash to a URI which allready has it

example.com
example.com#21
example.com#21#21
...