js image轉base64編碼
阿新 • • 發佈:2019-01-10
function getBase64Image(img) {
var canvas = document.createElement("canvas");
canvas.width = img.width;
canvas.height = img.height;
var ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0, img.width, img.height);
var dataURL = canvas.toDataURL("image/png" );
return dataURL // return dataURL.replace("data:image/png;base64,", "");
}
function main() {
var img = document.createElement('img');
img.src = './images/yeoman.png';
img.onload =function() {
var data = getBase64Image(img);
console.log(data);
}
document.body.appendChild(img);
}
main();