blob到base64会话javascript

我试图在javascript中将blob对象解析为base64字符串。请帮忙。我的代码是

var reader = new FileReader();

reader.addEventListener("loadend", function () {
    // reader.result contains the contents of blob as a typed array
    var buffer = reader.result;
    var view = new Uint8Array(buffer);
    var binary = String.fromCharCode.apply(window, view);
    var base64 = btoa(binary);
    cb(base64);
    console.log(base64);
}); 

reader.readAsArrayBuffer(data.blob);

你可以试试这个-

var blob = //your blob data;

var reader = new FileReader();

reader.readAsDataURL(blob); 
reader.onloadend = function() {
    var base64data = reader.result;                
    console.log(base64data);
    return;
}

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请参阅-

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