How can I pop-up a print dialog box using Javascript?

javascript

window.print();

unless you mean a custom looking popup.

You could do

<body onload="window.print()">
...
</body>

I like this, so that you can add whatever fields you want and print it that way.

function printPage() {
    var w = window.open();

    var headers =  $("#headers").html();
    var field= $("#field1").html();
    var field2= $("#field2").html();

    var html = "<!DOCTYPE HTML>";
    html += '<html lang="en-us">';
    html += '<head><style></style></head>';
    html += "<body>";

    //check to see if they are null so "undefined" doesnt print on the page. <br>s optional, just to give space
    if(headers != null) html += headers + "<br/><br/>";
    if(field != null) html += field + "<br/><br/>";
    if(field2 != null) html += field2 + "<br/><br/>";

    html += "</body>";
    w.document.write(html);
    w.window.print();
    w.document.close();
};

I do this to make sure they remember to print landscape, which is necessary for a lot of pages on a lot of printers.

<a href="javascript:alert('Please be sure to set your printer to Landscape.');window.print();">Print Me...</a>

<body onload="alert('Please be sure to set your printer to Landscape.');window.print();">
etc.
</body>

How can I pop-up a print dialog box using Javascript?

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