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javascript - Twitter Bootstrap: Print content of modal window

I'm developing a site using Bootstrap which has 28 modal windows with information on different products. I want to be able to print the information in an open modal window. Each window has an id.

<!-- firecell panel & radio hub -->
           <div class="modal hide fade" id="fcpanelhub">
              <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal">X</button>
                <h3>5000 Control Panel & Radio Hub</h3>
              </div>
              <div class="modal-body">
                <img src="../site/img/firecell/firecell-panel-info-1.png" alt=""/><hr/>
                <img src="../site/img/firecell/firecell-panel-info-2.png" alt=""/><hr/>
                <img src="../site/img/firecell/firecell-radio-hub-info-1.png" alt=""/><hr/>
                <img src="../site/img/firecell/firecell-radio-hub-info-2.png" alt=""/>
              </div>
              <div class="modal-footer">
                <a href="#" class="btn" data-dismiss="modal">Close</a>
              </div>    
           </div>

So if I add in a new button in modal-footer - 'print', and it's clicked I want that modal to print. Would I be right in saying javascript would be used? If so, how do I tell javascript to print only the open modal, and not the others?

All help appreciated.

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by (71.8m points)

Another solution

Here is a new solution based on Bennett McElwee answer in the same question as mentioned below.

Tested with IE 9 & 10, Opera 12.01, Google Chrome 22 and Firefox 15.0.
jsFiddle example

1.) Add this CSS to your site:

@media screen {
  #printSection {
      display: none;
  }
}

@media print {
  body * {
    visibility:hidden;
  }
  #printSection, #printSection * {
    visibility:visible;
  }
  #printSection {
    position:absolute;
    left:0;
    top:0;
  }
}

2.) Add my JavaScript function

function printElement(elem, append, delimiter) {
    var domClone = elem.cloneNode(true);

    var $printSection = document.getElementById("printSection");

    if (!$printSection) {
        $printSection = document.createElement("div");
        $printSection.id = "printSection";
        document.body.appendChild($printSection);
    }

    if (append !== true) {
        $printSection.innerHTML = "";
    }

    else if (append === true) {
        if (typeof (delimiter) === "string") {
            $printSection.innerHTML += delimiter;
        }
        else if (typeof (delimiter) === "object") {
            $printSection.appendChild(delimiter);
        }
    }

    $printSection.appendChild(domClone);
}?

You're ready to print any element on your site!
Just call printElement() with your element(s) and execute window.print() when you're finished.

Note: If you want to modify the content before it is printed (and only in the print version), checkout this example (provided by waspina in the comments): http://jsfiddle.net/95ezN/121/

One could also use CSS in order to show the additional content in the print version (and only there).


Former solution

I think, you have to hide all other parts of the site via CSS.

It would be the best, to move all non-printable content into a separate DIV:

<body>
  <div class="non-printable">
    <!-- ... -->
  </div>

  <div class="printable">
    <!-- Modal dialog comes here -->
  </div>
</body>

And then in your CSS:

.printable { display: none; }

@media print
{
    .non-printable { display: none; }
    .printable { display: block; }
}

Credits go to Greg who has already answered a similar question: Print <div id="printarea"></div> only?

There is one problem in using JavaScript: the user cannot see a preview - at least in Internet Explorer!


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