AI代码解释 constresponse1=awaitfetch('flowers.jpg');constresponse2=response1.clone();constmyBlob1=awaitresponse1.blob();constmyBlob2=awaitresponse2.blob();image1.src=URL.createObjectURL(myBlob1);image2.src=URL.createObjectURL(myBlob2); 1.5、response.body() body 属性返回一个 ReadableStream 对象...
(5)直接上传二进制数据 fetch()也可以直接上传二进制数据,将 Blob 或 arrayBuffer 数据放在body属性里面。 letblob =awaitnewPromise(resolve=>canvasElem.toBlob(resolve,'image/png') );letresponse =awaitfetch('/article/fetch/post/image', {method:'POST',body: blob }); 四、fetch()配置对象的完整 API...
导入RNFetchBlob库: 代码语言:txt 复制 import RNFetchBlob from 'rn-fetch-blob'; 创建一个函数来处理上传映像的逻辑。在该函数中,可以使用RNFetchBlob的fetch方法来发送HTTP请求并上传映像。以下是一个示例代码: 代码语言:txt 复制 const uploadImage = (imageUri) => { const url = 'https://example....
mode: 'cors', cache: 'default' , credentials: true, body: "image data"};var myRequest = new Request('flowers.jpg',myInit);fetch(myRequest,myInit).then(function(response) { return response.blob();}).then(function(myBlob) { var objectURL = URL.createObjectURL...
toBlob(function(blob) { fetch('/article/fetch/post/image', { method: 'POST', body: blob }) .then(response => response.json()) .then(result => alert(JSON.stringify(result, null, 2))) }, 'image/png'); } 总结 典型的 fetch 请求由两个 await 调用组成: let response = await fetch...
image1.src=URL.createObjectURL(myBlob1); image2.src= URL.createObjectURL(myBlob2); 1.5、response.body() body 属性返回一个 ReadableStream 对象,供用户操作,可以用来分块读取内容,显示下载的进度就是其中一种应用。 const response = await fetch('flower.jpg'); ...
做一些图片的转化 时会用到二进制上传 let blob = await new Promise(resolve =>canvasElem.toBlob(resolve, 'image/png'));let response = await fetch('/user/avatar', {method: 'POST',body:data canvasElem借助画布的toBlob功能 也可以使用画布的toDataURL...
('https://httpbin.org/image/png')constres=awaitfetch(req)consttype=res.headers.get('content-type')constsignal=req.signalletblob=awaitcreateTemporaryBlob(res.body,{type,signal})// const file = createTemporaryBlob(res.body, 'img.png', { type, signal })blob=undefined// loosing references ...
fetch()也可以直接上传二进制数据,将 Blob 或 arrayBuffer 数据放在body属性里面。 let blob = await new Promise(resolve => canvasElem.toBlob(resolve, 'image/png') ); let response = await fetch('/article/fetch/post/image', { method: 'POST', ...
letblob =awaitnewPromise(resolve=>canvasElem.toBlob(resolve,'image/png') );letresponse =awaitfetch('/article/fetch/post/image', {method:'POST',body: blob }); 判断请求是否成功 response.ok Response.ok属性返回一个布尔值,表示请求是否成功,true对应 HTTP 请求的状态码 200 到 299,false对应其他的...