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  • js图片转为base64的格式

    <!DOCTYPE html>
    <html lang="en">
    <head> 
        <meta charset="UTF-8" /> 
        <title>Document</title>
    </head>
    <body>
        <script type = "text/javascript">
            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/jpg"*/);
                return dataURL // return dataURL.replace("data:image/png;base64,", ""); 
            } 
            function main() { 
                var img = document.createElement('img'); 
                img.crossOrigin="anonymous"; 
                img.src = 'http://wechat.daopeng365.com/moni/taiyan.jpg'; 
                img.onload =function() { 
                    var datafe = getBase64Image(img); 
                     
                } 
                document.body.appendChild(img); 
            }
            main();
        </script>
    
    </body>
    </html>
    

      

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  • 原文地址:https://www.cnblogs.com/yesu/p/7405389.html
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