Created
May 5, 2019 02:21
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get a dataUrl for any img src on any domain.
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async function getDataUrl(src) { | |
function run(resolve, reject) { | |
const tmpImage = new Image(); | |
tmpImage.setAttribute('crossOrigin', 'Anonymous'); // NEEDED FOR CANVAS ANTI-TAINT | |
tmpImage.src = src; | |
tmpImage.onerror = reject; // no dataUrl | |
tmpImage.onload = () => { | |
const canvas = document.createElement('canvas'); | |
canvas.width = tmpImage.naturalWidth; // or .width; | |
canvas.height = tmpImage.naturalHeight; // or .height; | |
const context = canvas.getContext('2d'); | |
context.drawImage(tmpImage, 0, 0); | |
const dataUrl = canvas.toDataURL(); | |
// console.log({dataUrl}); | |
resolve(dataUrl); | |
}; | |
} | |
return new Promise(run); | |
} |
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