JavaScript如何转换二进制数据显示成图片

var xhr = new XMLHttpRequest();
xhr.open(‘GET‘, ‘/my/image/name.png‘, true);
xhr.responseType = ‘arraybuffer‘;

var uInt8Array = new Uint8Array(xhr.response);
var i = uInt8Array.length;
var binaryString = new Array(i);
while (i--) {
    binaryString[i] = String.fromCharCode(uInt8Array[i]);
}
var data = binaryString.join(‘‘);

var imageType = xhr.getResponseHeader("Content-Type");
$(‘#image‘).attr("src", "data:" + imageType + ";base64," + data)

var imageType = xhr.getResponseHeader("Content-Type");
var blob = new Blob([xhr.response], { type: imageType });
var imageUrl = (window.URL || window.webkitURL).createObjectURL(blob);
$(‘#image‘).attr("src", imageUrl);