网页填表 取图片

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网页填表  网页_取图片

var img = document.querySelector('#randImg > 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/jpeg");
return dataURL;

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