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POUsing a JS variable inside php code?
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2011-07-20T17:51:53.800
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2011-07-20T19:05:28.650
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<p>I'm attempting to make it so that when you click a button, it'll add new fields to the page. I know that onclick can only take JS functions so I decided to try my luck making a JS script. At first I had tried to do</p> <pre><code><html> <head><title>multiple line test</title><head> <body> <script type="text/javascript"> var texters=''; var num=0; function newInput(nomnom) { texters=''; num=nomnom+1; for (var i=0; i<nomnom; i++) { texters+='<p>\ Please specify a file, or a set of files:<br>\ <input type="file" size="40">\ </p>\ <p>\ Caption : <br> \ <input type="text" size="30">\ </p>';\ } document.write(texters+'<div>\ <input type="submit" value="Send">\ </div>\ </form>\ <br>' + '<input type="button" value="new entry" onclick="newInput(num)">' . '</body></html>'); } newInput(num); </script> </body> </html> </code></pre> <p>but that didn't work. So I tried instead to add a little bit of php being that I know it better. I tried this : </p> <pre><code><html> <head><title>multiple line test</title><head> <body> <script type="text/javascript"> var texters=''; var num=0; function newInput(nomnom) { document.write(<?php tex=''; for (var i=0; i<=(nomnom); i++) { tex.='<p> Please specify a file, or a set of files:<br> <input type="file" size="40"> </p> <p> Caption : <br> <input type="text" size="30"> </p>'; } echo tex . '<div> <input type="submit" value="Send"> </div> </form> <br>' . '<input type="button" value="new entry" onclick="newInput(num)">' . '</body></html>'; ?>); } newInput(num); </script> </body> </html> </code></pre> <p>But I know that won't work because I can't get the variable I'm using for the number of fields to use out of the JS and into the PHP. Is there any way I could force JS to put that number in $_POST so I can retrieve it without having to make another form? Or is there a better way to do what I'm trying to do?</p>
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<php><javascript>
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Using a JS variable inside php code?
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1. COPHP runs on the server. JavaScript runs in the browser. Understand what that means, and then disentangle the PHP code from the JS code.
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  USMatt Ball
2. CO@MattBall: that's usually my response to these types of questions too, but the OP's reference to $_POST makes me believe that they're actually using postback. It's a bit unclear in the question, though.
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  USPaul Sonier

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