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Does HTML5 Canvas emit an event when it finishes rendering?


Does HTML5 Canvas emit an event when it finishes rendering?

By : Madhukar
Date : November 20 2020, 01:01 AM
should help you out No, it does not.
The canvas or it context doesn't have a clue what's actually happening to (/being drawn on) them.
code :


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PDF Rendering in HTML5 Canvas

PDF Rendering in HTML5 Canvas


By : Aaron Khoo
Date : March 29 2020, 07:55 AM
will be helpful for those in need One solution may be:
http://googlesystem.blogspot.com/2009/09/embeddable-google-document-viewer.html
Best way for pre-rendering with HTML5's Canvas?

Best way for pre-rendering with HTML5's Canvas?


By : technocoreai
Date : March 29 2020, 07:55 AM
I wish this helpful for you using a canvas to pre-render your items is a good idea, however it's not always the best choice. If your items are complex (with gradient, shadows and visual effect), so yes it will be good. But if your items are simple (images, polygons, simple bezier curves, ...), your framerate won't increase but can decrease (because of the drawImage). It's then better to render in realtime.
From my experiments, you won't lose performance by using several small canvas (may be few memory) but it can be easier to manage than a big canvas (like an object oriented scene). If your items change sometimes, you are sure to easily manage the size of your temporary canvases.
Fire event after datatables table finishes rendering

Fire event after datatables table finishes rendering


By : dgsmith
Date : March 29 2020, 07:55 AM
help you fix your problem I am using datatables and fetching the data from an ajax URL. Each row of my returned table data includes a field that renders a button that looks like this: ,
Move the click handler into a separate function, for example:
code :
var selectedCat = 0;
function OnCategoryClick(btn){
    selectedCat = btn.getAttribute("data-catId");
    console.log("selecteCat is " + selectedCat);
    qDetailTable.ajax.url('/datatables/question-data/' + selectedCat).load();
    var selectedCatName = btn.getAttribute("data-catName");
    $('#questDetailCat').text('Questions about: ' + selectedCatName);
    $('#questSummary').hide();
    $('#questDetail').show();
});
$('#mydatatable').on('click', 'button', function () {
    OnCategoryClick(this); 
});
var btn = $('#datatable-summary').DataTable().$('button[data-catid="9"]').get(0);         
OnCategoryClick(btn);
How do I know when HTML5 Canvas' Rendering is Finished?

How do I know when HTML5 Canvas' Rendering is Finished?


By : torbein
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Canvas drawImage is synchronous. And even, really synchronous.
Your problem is that alert() is blocking, and even really blocking.
HTML5 Canvas Grid not rendering

HTML5 Canvas Grid not rendering


By : Rizwan R Ali
Date : March 29 2020, 07:55 AM
may help you . your HTML is not ready when you JS gets executed...
Put you script tag after the canvas, and it should work:
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