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Re: Problem with string concatenation

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On 01/04/2021 15:13, Daniele Ferrarese wrote:
> Hello
> I'm still here asking for your help as a beginner.
> 
> i'm trying to concatenate arguments of a function with the following string,
> 
> onclick="show_cart(<?php echo $variabili[4];?>","<?php echo $variabili[6];?>","<?php echo $variabili[7];?>","<?php echo $variabili[5];?>)"
> 
> but i think there are concatenation errors maybe for double quotes or i don't know.
> Could anyone help me? Thanks.
> 
> Rgds - Daniele Ferrarese
> 

You probably need - unless they are JavaScript declared variables - to 
turn your php $varaibili[]'s into strings...

i.e.
args="'$variabili[4]'.,.'$variabili[6]'.,.'$variabili[7]'.'$variabili[5]'"
// so args =  'arg1','arg2', etc...

onclick = "show_cart (<?php  echo $args ?>);"


remember JS only takes undeclared *numerical* args  without inverted commas.

So this is ok
var one, two;
show_cart(one,two);

and so is
show_cart(1,2);

But you have to do this if one and two are not numbers or declared

show_cart('one', 'two');

In all cases looking at 'show source' in the browser will help see what 
JavaScript is seeing and with luck your browser also supports a console, 
debugger and error log that can trap JavaScript errors


-- 
Religion is regarded by the common people as true, by the wise as 
foolish, and by the rulers as useful.

(Seneca the Younger, 65 AD)

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Thread

Problem with string concatenation Daniele Ferrarese <daniele.seversrl@gmail.com> - 2021-04-01 07:13 -0700
  Re: Problem with string concatenation The Natural Philosopher <tnp@invalid.invalid> - 2021-04-01 16:17 +0100
    Re: Problem with string concatenation Daniele Ferrarese <daniele.seversrl@gmail.com> - 2021-04-01 08:39 -0700
    Re: Problem with string concatenation Daniele Ferrarese <daniele.seversrl@gmail.com> - 2021-04-02 00:37 -0700
  Re: Problem with string concatenation JJ <jj4public@gmail.com> - 2021-04-01 22:19 +0700
    Re: Problem with string concatenation Daniele Ferrarese <daniele.seversrl@gmail.com> - 2021-04-01 08:40 -0700
  Re: Problem with string concatenation Jon Ribbens <jon+usenet@unequivocal.eu> - 2021-04-01 15:50 +0000
    Re: Problem with string concatenation Daniele Ferrarese <daniele.seversrl@gmail.com> - 2021-04-01 23:55 -0700
    Re: Problem with string concatenation Daniele Ferrarese <daniele.seversrl@gmail.com> - 2021-04-02 00:25 -0700
      Re: Problem with string concatenation Jon Ribbens <jon+usenet@unequivocal.eu> - 2021-04-02 15:25 +0000
        Re: Problem with string concatenation Daniele Ferrarese <daniele.seversrl@gmail.com> - 2021-04-05 23:54 -0700

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