I am generating a pdf file using jspdf library and I am getting the error “jspdf is not defined”

问题:

I am just trying to create a pdf file and I am getting the error "jspdf is not defined"

Here is my code

<?php          $doc = JFactory::getDocument();         $doc->addScript(JUri::base() .'js/jquery-1.7.1.min.js',true);         $doc->addScript(JUri::base() .'js/jspdf.debug.js',true);         $doc->addScript(JUri::base() .'js/basic.js',true);         $doc->addScript(JUri::base() .'js/png.js',true);         $doc->addScript(JUri::base() .'js/png_support.js',true);         $doc->addScript(JUri::base() .'js/zlib.js',true);         $doc->addScript(JUri::base() .'js/FileSaver.js',true);         $doc->addScript(JUri::base() .'js/tableExport.js',true);         $doc->addScript(JUri::base() .'js/jquery.base64.js',true);         $doc->addScript(JUri::base() .'js/html2canvas.js',true);         $doc->addScript(JUri::base() .'js/standard_fonts_metrics.js',true);         $doc->addScript(JUri::base() .'js/split_text_to_size.js',true);         $doc->addScript(JUri::base() .'js/from_html.js',true);     $script = "function loadtable(){     var doc = new jsPDF();     doc.text(20, 20, 'Hello world.');     doc.save('Test.pdf');}";     $doc->addScriptDeclaration($script);     echo "<button id='buttonMU' class='gen_btn' onclick='loadtable()'>Load Pdf</button>";     ?> 

But I do have the javscript included in my php code. Please advise.

回答1:

Check the source code of your output page. You're probably calling your javascript function before the DOM has finished loading.

Try ensuring your code runs after the page has loaded;

object.onload=function(){myScript};  $script = "window.onload = function(){     function loadtable(){     var doc = new jsPDF();     doc.text(20, 20, 'Hello world.');     doc.save('Test.pdf'); }"; 

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