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Tainted canvases may not be exported
...;
function loadImage(src, callback) {
var img = new Image();
img.onload = callback;
img.setAttribute('crossorigin', 'anonymous'); // works for me
img.src = src;
return img;
}
And in your callback you can now use ctx.drawImage and export it using toDataURL
...
Uploading both data and files in one form using Ajax?
...sed' but never addresses them. Nice piece of code, also showing how to use onload correctly +1
– mschr
Jul 23 '19 at 8:04
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Can I set an opacity only to the background image of a div?
...eapis.com/icon?family=Material+Icons">
</head>
<body onload="init();">
<section>
<canvas id="color"></canvas>
<div class="w3-container middle" id="text">
<i class="material-icons w3-highway-blue" style="font-size:60px;">assessment</i>...
How to fix the flickering in User controls
...
Put the code bellow in your constructor or OnLoad event and if you're using some sort of custom user control that having sub controls, you'll need to make sure that these custom controls are also double buffered (even though in MS documentation they say it's set to tr...
How do I programmatically click a link with javascript?
...myLink').click()">Click link 1</a>
or at page load :
<body onload="document.getElementById('myLink').click()">
...
<a id="myLink" onclick="alert('link click');">LINK 1</a>
...
</body>
sh...
Loading local JSON file
... else {
file = input.files[0];
fr = new FileReader();
fr.onload = receivedText;
fr.readAsText(file);
}
function receivedText(e) {
let lines = e.target.result;
var newArr = JSON.parse(lines);
}
}
</script>
</body>
</html>
Here i...
Can you autoplay HTML5 videos on the iPad?
...g. a click event).
Basically, a user-initiated play button works, but
an onLoad="play()" event does not.
For example, this would play the movie:
<input type="button" value="Play" onclick="document.myMovie.play()">
Whereas the following would do nothing on iOS:
<body onload="documen...
Google Maps: how to get country, state/province/region, city given a lat/long value?
... " + status);
}
});
}
</script>
</head>
<body onload="initialize()">
</body>
</html>
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...
Dynamically load a JavaScript file
...s browser compatibility
script.onreadystatechange = callback;
script.onload = callback;
// fire the loading
head.appendChild(script);
}
Then you write the code you want to use AFTER the script is loaded in a lambda function :
var myPrettyCode = function() {
// here, do what ever ...
AngularJS access scope from outside js function
...t(document.querySelector(node)).scope();
scope.$apply(func);
}
window.onload = function () {
accessScope('#outer', function (scope) {
// change any property inside the scope
scope.name = 'John';
scope.sname = 'Doe';
scope.msg = 'Superhero';
});
};
...