角度5將圖像轉換為base64

Question

我將圖像轉換為base64時遇到問題，轉換效果很好，但是當我嘗試使用base64打開圖像時，圖像根本不出來，我不知道我遇到了什么問題。

<img id="imageid" src="http://localhost:8000/media/db.png" alt="">

getBase64Image() {
    var data = document.getElementById("imageid");
    html2canvas(data).then(canvas => {  
        var imgconverted = canvas.toDataURL("data:image/jpeg;base64"); 
        console.log(imgconverted, 'base64');
    });  
}

結果顯示是正常的，但我在瀏覽器中將其打開，圖像並不僅顯示在一個幀上。

data:image/png;base64,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

不管有什么問題，希望您能為我提供幫助。

Answer 1

HTML2Canvas中當前存在圖像錯誤： 鏈接到錯誤