Does elementHandler in jspdf fromHTML support multiple elements? - jspdf

Question

I am using jspdf to convert an HTML page to PDF using fromHTML(). The HTML page includes multiple images, which I need fromHTML() to ignore in order to generate the PDF.
I want to use the elementHandler to ignore the images. However, I can only get that to work with a single element ID. Here is the way the documentation shows:
var elementHandler = {
'#ignorePDF': function (element, renderer) {
return true;
}
};
I have tried to replace the '#ignorePDF' ID reference to a reference with a class that applies to all of the images:
'.ignorePDF'
or to include multiple ID's (one for each image):
'#ignorPDF1,#ignorePDF2'
but neither of those approaches has worked for me. Is there another way to accomplish this?

Answer 1

i figured out both issues. To reference multiple items to ignore, set it up like this:
var elementHandler = {};
elementHandlers["#img1"] = function...
elementHandlers["#img2"] = function...
also best to create a function that you can reuse rather than defining it over and over.
As for the inability to use a variable for the key, that was a dumb javascript error on my part. The variable name can be used like this:
var img1 = "#img1";
elementHandlers[img1] = function...
The # character must be included.
It would be useful if the method were modified to permit a class value to be entered so that a single class could be used to denote all items to be ignored.

Answer 2

You can ignore all objects of the same class (called for example no-print), as follows:
var noprints = document.getElementsByClassName("no-print");
var elementHandler = {};
for (var i=0; i<noprints.length; i++) {
elementHandler['#'+noprints[i].getAttribute('id')] = function (element, renderer) { return true; }
};