如何使用 JavaScript 将图像转换为 blob?
以下代码使用 JavaScript 将图像转换为 blob:
示例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> <style> body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result { font-size: 18px; font-weight: 500; color: rebeccapurple; } </style> </head> <body> <h1>Convert an Image to blob using JavaScript</h1> <div class="sample"> <img src="https://picsum.photos/id/222/300/300.jpg" /> </div> <button class="Btn">Convert</button> <div class="result"></div> <h3>Click on the above button to convert the above image to blob</h3> <script> let BtnEle = document.querySelector(".Btn"); let resEle = gdocument.querySelector(".result"); BtnEle.addEventListener("click", () => { fetch("https://i.picsum.photos/id/222/300/300.jpg") .then(function (response) { return response.blob(); }) .then(function (blob) { resEle.innerHTML = "blob.size = " + blob.size + "<br>"; resEle.innerHTML += "blob.type = " + blob.type + "<br>"; }); }); </script> </body> </html>
输出
以上代码将输出以下结果:
单击“转换”按钮后:
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