Export HTML page to PDF on user click using JavaScript

Question

When user click on GeneratePDF button, I need to export the html page into a PDF file. I am successfully exporting HTML page into PDF file but for the first click only I am able to download data into PDF but from the second click I am unable to download the data to PDF file. I am not sure where I went wrong in the code.

Please check the code here:

Answer 1

This is because you define your "doc" variable outside of your click event. The first time you click the button the doc variable contains a new jsPDF object. But when you click for a second time, this variable can't be used in the same way anymore. As it is already defined and used the previous time.

change it to:

$(function () {

    var specialElementHandlers = {
        '#editor': function (element,renderer) {
            return true;
        }
    };
 $('#cmd').click(function () {
        var doc = new jsPDF();
        doc.fromHTML(
            $('#target').html(), 15, 15, 
            { 'width': 170, 'elementHandlers': specialElementHandlers }, 
            function(){ doc.save('sample-file.pdf'); }
        );

    });  
});

and it will work.