30 lines
1.2 KiB
HTML
30 lines
1.2 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<div id="before-print">Before print</div>
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<canvas id="canvas" width="100" height="100"></canvas>
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<script>
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onload = function() {
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// window.print() is special until after the load event is finished firing.
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setTimeout(function() {
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// This fires a timer which would trigger a navigation and prevent the
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// test from completing if it happens during window.print().
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let meta = document.createElement("meta");
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meta.setAttribute("http-equiv", "refresh");
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meta.setAttribute("content", "0; url=/unlikely-to-be-found");
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document.head.appendChild(meta);
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// This one should block until we're done printing, and block the
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// navigation too.
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window.print();
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meta.remove();
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document.body.insertAdjacentHTML('beforeend', `<div id="after-first-print">After first print</div>`);
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let canvas = document.getElementById("canvas");
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canvas.mozPrintCallback = function() {};
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// This one shouldn't, because the print callbacks need to run.
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window.print();
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document.body.insertAdjacentHTML('beforeend', `<div id="after-second-print">After second print</div>`);
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}, 0);
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}
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</script>
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